Bridge Golden-Gate 1.5.7

Fixed
• Fixed sending error caused by inconsistent use of upper and lower case in sender’s email address

.gitattributes

@@ -1 +1 @@
-Changelog.md merge=union
+unreleased.md merge=union

.github/ISSUE_TEMPLATE/general-issue-template.md

@@ -27,6 +27,9 @@ Issue tracker is ONLY used for reporting bugs with technical details. "It doesn'
 3.
 4.
 
+## Version Information
+<!--- Which version of the app(s) were you using when you experienced this issue? -->
+
 ## Context (Environment)
 <!--- How has this issue affected you? What are you trying to accomplish? -->
 <!--- Providing context helps us come up with a solution that is most useful in the real world -->

.gitignore

@@ -18,23 +18,30 @@ coverage.html
 mem.pprof
 
 # Auto generated frontend
-frontend/qml/BridgeUI/*.qmlc
+internal/frontend/qml/BridgeUI/*.qmlc
-frontend/qml/ProtonUI/*.qmlc
+internal/frontend/qml/ImportExportUI/*.qmlc
-frontend/qml/ProtonUI/fontawesome.ttf
+internal/frontend/qml/ProtonUI/*.qmlc
-frontend/qml/ProtonUI/images
+internal/frontend/qml/ProtonUI/fontawesome.ttf
+internal/frontend/qml/ProtonUI/images
+internal/frontend/qml/ImportExportUI/images
 frontend/qml/*.qmlc
 
 # Build files
 bridge_darwin_*.tgz
 cmd/Desktop-Bridge/deploy
-internal/frontend/qt/moc.cpp
+cmd/Import-Export/deploy
-internal/frontend/qt/moc.go
+internal/frontend/qt*/moc.cpp
-internal/frontend/qt/moc.h
+internal/frontend/qt*/moc.go
-internal/frontend/qt/moc_cgo_darwin_darwin_amd64.go
+internal/frontend/qt*/moc.h
-internal/frontend/qt/moc_moc.h
+internal/frontend/qt*/moc_cgo_*.go
-internal/frontend/qt/rcc.cpp
+internal/frontend/qt*/moc_moc.h
-internal/frontend/qt/rcc_cgo_darwin_darwin_amd64.go
+internal/frontend/qt*/rcc.cpp
+internal/frontend/qt*/rcc.qrc
+internal/frontend/qt*/rcc_cgo_*.go
+
 internal/frontend/rcc.cpp
 internal/frontend/rcc.qrc
-internal/frontend/rcc_cgo_darwin_darwin_amd64.go
+internal/frontend/rcc_cgo_*.go
 vendor-cache/
+
+/main.go

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: gitlab.protontech.ch:4567/go/bridge/ci
+image: gitlab.protontech.ch:4567/go/bridge-internal:latest
 
 before_script:
   - eval $(ssh-agent -s)
@@ -13,38 +13,15 @@ before_script:
 cache:
   key: go-mod
   paths:
-  - .cache
+    - .cache
   policy: pull
 
 stages:
-  - image
   - cache
   - test
   - build
   - mirror
 
-# Stage: IMAGE
-
-build-ci-image:
-  stage: image
-  image: docker:stable
-  before_script: []
-  cache: {}
-  tags:
-  - heavy
-  only:
-    changes:
-    - ci/*
-  services:
-  - docker:dind
-  variables:
-    DOCKER_HOST: tcp://docker:2375
-  script:
-  - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
-  - docker info
-  - docker build -t gitlab.protontech.ch:4567/go/bridge/ci:latest ci
-  - docker push gitlab.protontech.ch:4567/go/bridge/ci:latest
-
 # Stage: CACHE
 
 # This will ensure latest dependency versions and updates the cache for
@@ -54,11 +31,11 @@ cache-push:
   only:
     - branches
   script:
-  - echo ""
+    - echo ""
   cache:
     key: go-mod
     paths:
-    - .cache
+      - .cache
 
 # Stage: TEST
 
@@ -67,7 +44,9 @@ lint:
   only:
     - branches
   script:
-    - make lint
+    - env GOMAXPROCS=$(( ${CI_TAG_CPU} / 2 )) make lint
+  tags:
+    - medium
 
 test:
   stage: test
@@ -83,6 +62,8 @@ test:
     - pass init `gpg --list-keys | grep "^   " | tail -1 | tr -d '[:space:]'`
     # Then finally run the tests
     - make test
+  tags:
+    - medium
 
 test-integration:
   stage: test
@@ -90,6 +71,8 @@ test-integration:
     - branches
   script:
     - VERBOSITY=debug make -C test test
+  tags:
+    - large
 
 dependency-updates:
   stage: test
@@ -98,23 +81,48 @@ dependency-updates:
 
 # Stage: BUILD
 
-build-linux:
+.build-base:
   stage: build
-  # Test build every time (= we want to know build is possible).
   only:
     - branches
   script:
     - make build
+  artifacts:
+    # Note: The latest artifacts for refs are locked against deletion, and kept regardless of the expiry time.
+    # Introduced in GitLab 13.0 behind a disabled feature flag, and made the default behavior in GitLab 13.4.
+    expire_in: 1 day
+  tags:
+    - large
+
+build-linux:
+  extends: .build-base
   artifacts:
     name: "bridge-linux-$CI_COMMIT_SHORT_SHA"
     paths:
       - bridge_*.tgz
-    expire_in: 2 week
 
-build-darwin:
+build-linux-qa:
-  stage: build
+  extends: .build-base
   only:
-    - branches
+    - web
+  script:
+    - BUILD_TAGS="build_qa pmapi_qa" make build
+  artifacts:
+    name: "bridge-linux-qa-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - bridge_*.tgz
+
+build-ie-linux:
+  extends: .build-base
+  script:
+    - make build-ie
+  artifacts:
+    name: "ie-linux-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - ie_*.tgz
+
+.build-darwin-base:
+  extends: .build-base
   before_script:
     - eval $(ssh-agent -s)
     - echo "$SSH_PRIVATE_KEY" | tr -d '\r' | ssh-add - > /dev/null
@@ -125,25 +133,47 @@ build-darwin:
     - export PATH=/usr/local/opt/gnu-sed/libexec/gnubin:$PATH
     - export GOPATH=~/go
     - export PATH=$GOPATH/bin:$PATH
+    - export CGO_CPPFLAGS='-Wno-error -Wno-nullability-completeness -Wno-expansion-to-defined -Wno-builtin-requires-header'
   cache: {}
   tags:
-    - macOS-bridge
+    - macOS
-  script:
+
-    - make build
+build-darwin:
+  extends: .build-darwin-base
   artifacts:
     name: "bridge-darwin-$CI_COMMIT_SHORT_SHA"
     paths:
       - bridge_*.tgz
-    expire_in: 2 week
 
-build-windows:
+build-darwin-qa:
-  stage: build
+  extends: .build-darwin-base
-  services:
-  - docker:dind
   only:
-    - branches
+    - web
+  script:
+    - BUILD_TAGS="build_qa pmapi_qa" make build
+  artifacts:
+    name: "bridge-darwin-qa-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - bridge_*.tgz
+
+build-ie-darwin:
+  extends: .build-darwin-base
+  script:
+    - make build-ie
+  artifacts:
+    name: "ie-darwin-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - ie_*.tgz
+
+.build-windows-base:
+  extends: .build-base
+  services:
+    - docker:dind
   variables:
     DOCKER_HOST: tcp://docker:2375
+
+build-windows:
+  extends: .build-windows-base
   script:
     # We need to install docker because qtdeploy builds for windows inside a docker container.
     # Docker will connect to the dockerd daemon provided by the runner service docker:dind at tcp://docker:2375.
@@ -156,7 +186,40 @@ build-windows:
     name: "bridge-windows-$CI_COMMIT_SHORT_SHA"
     paths:
       - bridge_*.tgz
-    expire_in: 2 week
+
+build-windows-qa:
+  extends: .build-windows-base
+  only:
+    - web
+  script:
+    # We need to install docker because qtdeploy builds for windows inside a docker container.
+    # Docker will connect to the dockerd daemon provided by the runner service docker:dind at tcp://docker:2375.
+    - curl -fsSL https://get.docker.com -o get-docker.sh && sh get-docker.sh
+    - apt-get update && apt-get -y install binutils-mingw-w64 tar gzip
+    - ln -s /usr/bin/x86_64-w64-mingw32-windres /usr/bin/windres
+    - go mod download
+    - TARGET_OS=windows BUILD_TAGS="build_qa pmapi_qa" make build
+  artifacts:
+    name: "bridge-windows-qa-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - bridge_*.tgz
+
+build-ie-windows:
+  extends: .build-windows-base
+  script:
+    # We need to install docker because qtdeploy builds for windows inside a docker container.
+    # Docker will connect to the dockerd daemon provided by the runner service docker:dind at tcp://docker:2375.
+    - curl -fsSL https://get.docker.com -o get-docker.sh && sh get-docker.sh
+    - apt-get update && apt-get -y install binutils-mingw-w64 tar gzip
+    - ln -s /usr/bin/x86_64-w64-mingw32-windres /usr/bin/windres
+    - go mod download
+    - TARGET_OS=windows make build-ie
+  artifacts:
+    name: "ie-windows-$CI_COMMIT_SHORT_SHA"
+    paths:
+      - ie_*.tgz
+
+# Stage: MIRROR
 
 mirror-repo:
   stage: mirror

.golangci.yml

@@ -21,6 +21,12 @@ issues:
         - gochecknoinits
         - gosec
 
+linters-settings:
+  godox:
+    keywords:
+      - TODO
+      - FIXME
+
 linters:
   # setting disable-all will make only explicitly enabled linters run
   disable-all: true

BUILDS.md

@@ -1,4 +1,4 @@
-# Building ProtonMail Bridge app
+# Building ProtonMail Bridge and Import-Export app
 
 ## Prerequisites
 * Go 1.13
@@ -13,12 +13,22 @@ To enable the sending of crash reports using Sentry please set the
 Otherwise, the sending of crash reports will be disabled.
 
 ## Build
-* for Windows please unset the `MSYSTEM` variable
+In order to build Bridge or Import-Export app with Qt interface we are using
+[Qt Go Binding](https://github.com/therecipe/qt).  The dependencies and
+installation of this tool is part of `make build` target.  If you have issues
+with installation of therecipe/qt we recommend to follow [this
+wiki](https://github.com/therecipe/qt/wiki/Installation-on-Linux)
+
+Please note that `$(go env GOPATH)/bin` must be in your `PATH` to ensure
+binaries installed by `therecipe/qt` (such as `qtdeploy`) are found. Also,
+before you start build **on Windows**, please unset the `MSYSTEM` variable
+
 
 ```bash
 export MSYSTEM=
 ```
 
+### Build Bridge
 * in project root run
 
 ```bash
@@ -26,9 +36,39 @@ make build
 ```
 
 * The result will be stored in `./cmd/Destop-Bridge/deploy/${GOOS}/`
-    * for `linux`, the binary will have the name of the project directory (e.g `bridge`)
+    * for `linux`, the binary will have the name of the project directory (e.g `proton-bridge`)
-    * for `windows`, the binary will have the file extension `.exe` (e.g `bridge.exe`)
+    * for `windows`, the binary will have the file extension `.exe` (e.g `proton-bridge.exe`)
-    * for `darwin`, the application will be created with name of the project directory (e.g `bridge.app`)
+    * for `darwin`, the application will be created with name of the project directory (e.g `proton-bridge.app`)
+
+#### Build Bridge without GUI
+* If you need to build bridge without Qt dependencies, you can do so by running
+
+```bash
+make build-nogui
+```
+
+* Bridge without GUI will start by default without any interface (i.e., there is no way to add or remove client, get bridge password, etc)
+* Bridge always has the option (whether built with Qt or without) to use a CLI interface by starting it with the argument `-c`
+* NOTE: You still need to setup supported keychain on your system
+
+### Build Import-Export
+* in project root run
+
+```bash
+make build-ie
+```
+
+* The result will be stored in `./cmd/Import-Export/deploy/${GOOS}/`
+    * for `linux`, the binary will have the name of the project directory (e.g `proton-bridge`)
+    * for `windows`, the binary will have the file extension `.exe` (e.g `proton-bridge.exe`)
+    * for `darwin`, the application will be created with name of the project directory (e.g `proton-bridge.app`)
+
+### Tags
+Note that repository contains both Bridge and Import-Export apps and they are
+not released together. Therefore, each app has own tag prefix. Bridge tags
+starts with `br-` and Import-Export tags starts with `ie-`. Both tags continue
+with semantic versioning `MAJOR.MINOR.PATCH`. An example of full tag is
+`br-1.4.4` or `ie-1.1.2` (current versions in October 2020).
 
 ## Useful tests, lints and checks
 In order to be able to run following commands please install the development dependencies: 

COPYING_NOTES.md

@@ -41,7 +41,6 @@ ProtonMail Bridge includes the following 3rd party software:
 * [imap-appendlimit](https://github.com/emersion/go-imap-appendlimit)       | Available under [license](https://github.com/emersion/go-imap-appendlimit/blob/master/LICENSE)
 * [imap-idle](https://github.com/emersion/go-imap-idle)                     | Available under [license](https://github.com/emersion/go-imap-idle/blob/master/LICENSE)
 * [imap-quota](https://github.com/emersion/go-imap-quota)                   | Available under [license](https://github.com/emersion/go-imap-quota/blob/master/LICENSE)
-* [imap-specialuse](https://github.com/emersion/go-imap-specialuse)         | Available under [license](https://github.com/emersion/go-imap-specialuse/blob/master/LICENSE)
 * [sasl](https://github.com/emersion/go-sasl)                               | Available under [license](https://github.com/emersion/go-sasl/blob/master/LICENSE)
 * [smtp](https://github.com/emersion/go-smtp)                               | Available under [license](https://github.com/emersion/go-smtp/blob/master/LICENSE)
 * [textwrapper](https://github.com/emersion/go-textwrapper)                 | Available under [license](https://github.com/emersion/go-textwrapper/blob/master/LICENSE)

Changelog.md

@@ -1,10 +1,291 @@
-# ProtonMail Bridge Changelog
+# ProtonMail Bridge and Import-Export app Changelog
 
 Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
-## [v1.3.x] Emma (beta 2020-07-XXX)
+## [Bridge 1.5.7] Golden Gate
+
+### Fixed
+CSB-331 Fix sending error due to mixed case in sender address.
+
+## [Bridge 1.5.6] Golden Gate
 
 ### Added
+* GODT-797 EXPUNGE waits for APPEND to prevent data loss when Outlook moves from Spam to Inbox.
+
+
+## [Bridge 1.5.5] Golden Gate
+
+### Changed
+* GODT-922 Fix panic during restarting the bridge.
+* GODT-945 Fix panic in integration tests caused by concurrent map writes.
+* GODT-732 Fix usage of fontawesome.
+* GODT-951 Properly parse message with long lines in header and long header split to multiple lines (upgrading to latest go-message).
+* GODT-894 Fix panic when sending while account is logging in.
+* GODT-858 Bump go-rfc5322 dependency to v0.5.0 to handle some invalid RFC5322 groups and add support for semicolon delimiter in address-list.
+* GODT-923 Fix listener locking.
+* GODT-389 Prefer `From` header instead of `MAIL FROM` address.
+* GODT-898 Only set ContentID for inline attachments.
+* GODT-773 Replace `INTERNALDATE` older than birthday of RFC822 by birthday of RFC822 to not crash Apple Mail.
+* GODT-927 Avoid to call API with empty label name.
+* GODT-915 Bump go-imap dependency and remove go-imap-specialuse dependency.
+
+## [Bridge 1.5.4] Golden Gate
+
+### Added
+* Log warning about permanently deleting messages.
+
+### Fixed
+* License path on Arch and Windows.
+
+## [Bridge 1.5.3] Golden Gate [Import-Export 1.2.3] Elbe
+
+### Added
+* GODT-906 Handle RFC2047-encoded content transfer encoding values.
+* GODT-887 Make supports build with native Qt.
+
+### Changed
+* GODT-893 Bump go-rfc5322 dependency to v0.2.1 to properly detect syntax errors during parsing.
+* GODT-892 Swap type and value from sentry exception and cut panic handlers from the traceback.
+* GODT-854 EXPUNGE and FETCH unilateral responses are returned before OK EXPUNGE or OK STORE, respectively.
+* #109 Renamed COPYING.md to not be read by [pkg-go-dev](https://pkg.go.dev/license-policy).
+
+### Removed
+* GODT-651 Build creates proper binary names.
+* GODT-148 Allow import (using the Import-Export app) of already encrypted messages as is.
+* GODT-202 Update to latest go-smtp.
+
+### Fixed
+* GODT-135 Support parameters in SMTP `FROM MAIL` command, such as `BODY=7BIT`, or empty value `FROM MAIL:<>` used by some clients.
+* GODT-338 GODT-781 GODT-857 GODT-866 Flaky tests.
+* GODT-773 Replace old dates with birthday of RFC822 to not crash Apple Mail. Original is available under `X-Original-Date` header.
+
+## [Bridge 1.5.2] Golden Gate
+
+### Changed
+* GODT-883 Use `ClearPacket` for `text/plain` with signature.
+
+
+## [Bridge 1.5.1] Golden Gate
+
+### Added
+* GODT-701 Try load messages one-by-one if IMAP server errors with batch load
+  and not interrupt the transfer.
+* GODT-878 Tests for send packet creation logic.
+
+### Changed
+* GODT-180 Updated Sentry client.
+* GODT-651 Build creates proper binary names.
+* GODT-878 Fix an issue where the random session key is inadvertently sent to
+  the Proton server. The data payload is always encrypted within TLS, but this
+  is still a potential privacy problem. Discovered by Proton's internal
+  security audit team.
+* GODT-878 Refactor and move the send packet creation logic to `pmapi.SendMessageReq`.
+* GODT-878 Encryption of session keys moved to pmapi.
+
+
+## [IE 1.2.1, 1.2.2] Elbe
+
+### Added
+* GODT-799 Skipped messages do not change total counts but shows as separate number.
+
+### Fixed
+* GODT-799 Fix skipping unwanted folders importing from mbox files.
+* GODT-769 Close connection before deleting labels to prevent panics accessing deleted bucket.
+
+### Removed
+* GODT-766 Remove GUI popup for IMAP TLS error.
+
+
+## [Bridge 1.5.0] Golden Gate
+
+### Changed
+* Updated go-mbox dependency back to upstream.
+
+### Fixed
+* GODT-847 Waiting for unilateral update during deleting the message.
+* GODT-849 Show in error counts in the end also lost messages.
+* GODT-835 Do not include conversation ID in references to show properly conversation threads in clients.
+* GODT-685 Improve deb packaging regarding dejavu font.
+
+
+## [IE 1.2.0] Elbe
+
+### Added
+* GODT-763 Detect Gmail labels from All Mail mbox export (using X-Gmail-Label header).
+* GODT-834 Info about tags in BUILDS.md and link to Import-Export page in README.md.
+* GODT-777 Support Apple Mail MBOX export format.
+
+### Fixed
+* GODT-677 Windows IE: global import settings not fit in window.
+* GODT-794 Congo fails to update to Danube.
+* GODT-749 Don't force PGP/Inline when sending plaintext messages.
+* GODT-764 Fix deadlock in integration tests for Import-Export.
+* GODT-662 Do not resume paused transfer progress after dismissing cancel popup.
+* GODT-772 Sanitize mailbox names for exporting to follow OS restrictions.
+* GODT-771 Show fatal errors after export is terminated.
+* GODT-779 Do not propagate updates when progress is stopped.
+* GODT-779 Unpause progress during fatal error to properly stop progress.
+* GODT-779 Stop ongoing transfer calls sooner (re-check after import request is generated).
+* Fix measurement of uploading attachments during transfer.
+* GODT-827 Do not spam sentry with bad ID by integration test.
+* GODT-700 Fix UTF-7 incompatibility.
+* GODT-837 Fix flaky TestFailUnpauseAndStops.
+* GODT-782 Don't use TLS pinning when checking connectivity status.
+
+### Changed
+* TLS pins conform to official list.
+
+
+## [Bridge 1.4.5] Forth
+
+### Fixed
+* GODT-829 Remove `NoInferior` to display sub-folders in apple mail.
+
+## [Bridge 1.4.4] Forth
+
+### Fixed
+* GODT-798 Replace, don't add, transfer encoding when making body 7-bit clean.
+* Move/Copy duplicate for emails with References in Outlook.
+* CSB-247 Cannot update from 1.4.0.
+
+
+## [Bridge 1.4.3] Forth
+
+### Changed
+* Reverted sending IMAP updates to be not blocking again.
+
+### Fixed
+* GODT-783 Settings flags by FLAGS (not using +/-FLAGS) do not change spam state.
+
+
+## [Bridge 1.4.2] Forth
+
+### Changed
+* GODT-761 Use label.Path instead of Name to partially support subfolders for webapp beta release.
+* GODT-765 Improve speed of checking whether message is deleted.
+
+
+## [IE 1.1.2] Danube (beta 2020-09-xx)
+
+### Fixed
+* GODT-770 Better handling of extraneous end-of-mail indicator.
+* GODT-776 Fix crash when IMAP client connects while account is logging in.
+
+### Changed
+* Bump crypto version to v0.0.0-20200818122824-ed5d25e28db8.
+* GODT-785 Clear separation of different message IDs in integration tests.
+### Changed
+* GODT-741 Import-Export shows "Unable to parse time" notice instead of zero time in error report window.
+
+* Bump crypto version to v0.0.0-20200818122824-ed5d25e28db8.
+* GODT-374 Allow to send calendar update multiple times.
+
+## [IE 1.1.1] Danube (beta 2020-09-xx) [Bridge 1.4.1] Forth (beta 2020-09-xx)
+
+### Fixed
+* GODT-752 Parsing message with empty addresses.
+* GODT-752 Parsing non-utf8 multipart/alternative message.
+* GODT-752 Parsing message with duplicate charset parameter.
+
+
+## [IE 1.1.0] Danube
+
+### Fixed
+* GODT-703 Import-Export showed always at least one total message.
+* GODT-738 Fix for mbox files with long lines.
+### Fixed
+* GODT-732 Do not mix font awesome icon with regular text to avoid issues on Fedora.
+
+
+## [Bridge 1.4.0] Forth
+
+### Added
+* GODT-682 Persistent anonymous API cookies for Import-Export.
+* GODT-357 Use go-message to make a better message parser.
+* GODT-720 Time measurement of progress for Import-Export.
+
+### Changed
+* GODT-511 User agent format changed.
+* Unsilent errors reading mbox files.
+* GODT-692 QA build with option to change API URL by ENV variable.
+* GODT-704 User agent detected by fake IMAP extension instead of AUTH callback (some clients use LOGIN instead of AUTH).
+* GODT-695 Parallel upload for ProtonMail target.
+
+### Removed
+* GODT-519 Unused AUTH scope parsing methods.
+
+### Fixed
+* GODT-698 Use correct package type for signed PGP/Inline messages.
+* Generic bug report window title.
+* Fix missing check for unencrypted recipients during sending.
+* Version checking for catalina.
+* GODT-730 Limit maximal TLS version for Yahoo IMAP server.
+
+
+## [IE 1.0.x] Congo (v1.0.0 live 2020-09-08)
+
+### Added
+* GODT-633 Persistent anonymous API cookies for better load balancing and abuse detection. 
+* GODT-461 Add support for `\Deleted` flag.
+
+### Changed
+* GODT-462 Pausing event loop while FETCHing to prevent EXPUNGE.
+* Wait for unilateral response to be delivered.
+* GODT-409 Set flags have to replace all flags.
+* GODT-531 Better way to add trusted certificate in macOS.
+* Bumped golangci-lint to v1.29.0.
+* GODT-549 Check log file size more often to prevent huge log files.
+* Bumped various dependencies:
+    * Updated andybalholm/cascadia v1.1.0 -> v1.2.0.
+    * Updated emersion/go-imap-specialuse 20161227184202-ba031ced6a62 -> 20200722111535-598ff00e4075.
+    * Updated emersion/go-sasl 20191210011802-430746ea8b9b -> 20200509203442-7bfe0ed36a21.
+    * Updated github.com/go-resty/resty/v2 v2.2.0 -> v2.3.0.
+    * Updated github.com/golang/mock v1.4.3 -> v1.4.4.
+    * Updated github.com/google/go-cmp v0.4.0 -> v0.5.1.
+    * Updated github.com/hashicorp/go-multierror v1.0.0 -> v1.1.0.
+    * Updated github.com/jaytaylor/html2text 20200220170450-61d9dc4d7195 -> 20200412013138-3577fbdbcff7.
+    * Updated github.com/jhillyerd/enmime v0.8.0 -> v0.8.1.
+    * Updated github.com/keybase/go-keychain 20200218013740-86d4642e4ce2 -> 20200502122510-cda31fe0c86d.
+    * Updated github.com/logrusorgru/aurora 20200102142835-e9ef32dff381 -> v2.0.3+incompatible.
+    * Updated github.com/miekg/dns v1.1.29 -> v1.1.30.
+    * Updated github.com/nsf/jsondiff 20190712045011-8443391ee9b6 -> 20200515183724-f29ed568f4ce.
+    * Updated github.com/sirupsen/logrus v1.4.2 -> v1.6.0.
+    * Updated github.com/stretchr/testify v1.5.1 -> v1.6.1.
+    * Updated github.com/therecipe/qt 20200126204426-5074eb6d8c41 -> 20200701200531-7f61353ee73e.
+    * Updated github.com/urfave/cli v1.22.3 -> v1.22.4.
+    * Updated golang.org/x/net 20200301022130-244492dfa37a -> 20200707034311-ab3426394381.
+    * Updated golang.org/x/text v0.3.2 -> v0.3.3.
+* Set first-start to false in bridge, not in frontend.
+* GODT-400 Refactor sendingInfo.
+* GODT-513 Update routes to API v4.
+* GODT-551 Do not ignore errors during message flagging.
+* GODT-380 Adding IE GUI to Bridge repo and building.
+    * BR: extend functionality of PopupDialog.
+    * BR: makefile APP_VERSION instead of BRIDGE_VERSION.
+    * BR: use common logs function for Qt.
+    * BR: change `go.progressDescription` to `string`.
+    * IE: Rounded button has fa-icon.
+    * IE: `Upgrade` → `Update`.
+    * IE: Moving `AccountModel` to `qt-common`.
+    * IE: Added `ReportBug` to `internal/importexport`.
+    * IE: Added event watch in GUI.
+    * IE: Removed `onLoginFinished`.
+    * Structure for transfer rules in QML.
+* GODT-213 Convert panics from message parser to error.
+* GODT-585 Do not allow deleting messages from All Mail.
+
+### Fixed
+* GODT-655 Fix date picker with automatic Windows DST.
+* GODT-454 Fix send on closed channel when receiving unencrypted send confirmation from GUI.
+* GODT-597 Duplicate sending when draft creation takes too long.
+* GODT-634 Hover on links in popups.
+
+
+
+## [Bridge 1.3.x] Emma (v1.3.2 beta 2020-08-04, v1.3.3 beta 2020-08-06, v1.3.3 live 2020-08-12)
+
+### Added
+* GODT-554 Detect and notify about "bad certificate" IMAP TLS error.
 * IMAP mailbox info update when new mailbox is created.
 * GODT-72 Use ISO-8859-1 encoding if charset is not specified and it isn't UTF-8.
 
@@ -61,7 +342,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Issue causing deadlock when reloading users keys due to double-locking of a mutex.
 * Correctly handle failure to unlock single key.
 * GODT-479 Fix flaky integration tests.
-* GODT-484 Fix infinite loop when decoding invalid 2231 charset
+* GODT-484 Fix infinite loop when decoding invalid 2231 charset.
 * GODT-267 Correctly detect if a message is a draft even if does not have DraftLabel.
 * GODT-308 Reduce minimum read speed threshold to avoid issues with flaky internet.
 * GODT-321 Changing address ordering would cause all messages to disappear in combined mode.
@@ -70,7 +351,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * GODT-427 Fix race condition in auth refresh that could cause user to be logged out.
 
 
-## [v1.2.8] Donghai-fix-append  (beta 2020-06-XXX)
+## [Bridge 1.2.8] Donghai-fix-append  (beta 2020-06-XXX)
 
 ### Changed
 * GODT-396 reduce number of EXISTS calls.
@@ -79,7 +360,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 ### Fixed
 * GODT-502 Fixed crash when unable to parse a message header.
 
-## [v1.2.7] Donghai-fix-sync - (beta 2020-05-07 live 2020-04-20)
+## [Bridge 1.2.7] Donghai-fix-sync - (beta 2020-05-07 live 2020-04-20)
 
 ### Added
 * IMAP extension MOVE with UIDPLUS support.
@@ -102,7 +383,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Use correct binary name when finding location of addcert.scpt.
 
 
-## [v1.2.6] Donghai - beta (2020-03-31)
+## [Bridge 1.2.6] Donghai - beta (2020-03-31)
 
 ### Added
 * GODT-145 Support drafts.
@@ -157,13 +438,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * UserIDs were not checked when importing to Sent folder (affects copying from account1/sent to account2/sent).
 
 
-## [v1.2.5] Charles - live (2020-03-11) beta (from 2020-02-10)
+## [Bridge 1.2.5] Charles - live (2020-03-11) beta (from 2020-02-10)
-
-### Hotfix
-* CSB-40 panic in credential store.
-* Keyring unlocking locker.
-* No panic on failed html parse.
-* Too many open files.
 
 ### Added
 * GODT-112 Migration of preferences from c10 to c11.
@@ -208,13 +483,13 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
     * Separated IMAP to store and IMAP.
     * Store is responsible for everything about db and calls to pmapi, including event loop, sync, address mode.
     * IMAP is responsible only for IMAP interfaces.
-    * Event loop is only one per ProtonMail account (instead of one per alias)
+    * Event loop is only one per ProtonMail account (instead of one per alias).
-    * It also means only one database per account (instead of one per address)
+    * It also means only one database per account (instead of one per address).
-    * Changing address mode is not destroying database, only buckets with IDs mapping (keeping metadata for account)
+    * Changing address mode is not destroying database, only buckets with IDs mapping (keeping metadata for account).
     * Before first sync we set event ID so we will not miss changes happening during sync.
     * Thanks to previous point we are not starting new sync when we finish first one because of unprocessed events.
-    * Sync is not blocking event loop (user can get new messages even during sync)
+    * Sync is not blocking event loop (user can get new messages even during sync).
-    * Sync is not blocking reading operations (user can list mailboxes even before first sync is done)
+    * Sync is not blocking reading operations (user can list mailboxes even before first sync is done).
     * Sync is not blocking writing operations such as mark messages read/unread and so on.
     * Most operations have to be passed to API and only event loop is writing them to the database.
     * Avoid relying on counts API endpoint; use event counts as much as possible.
@@ -224,8 +499,8 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
     * Synchronisation will create a label if not yet present.
     * Labels and Folders (including system folders) are stored in DB together with their counts for offline read-out.
     * AddressIDs for all user addresses are stored in DB.
-    * IMAP updates channel is set when an IMAP client connects (and IMAP updates are dropped until then)
+    * IMAP updates channel is set when an IMAP client connects (and IMAP updates are dropped until then).
-    * DB keeps track of address mode (split/combined)
+    * DB keeps track of address mode (split/combined).
 * Event loop starts as soon as user is initialised (i.e. logged in), not just when imap is connected.
 * Use pmapi v1.0.13.
 * Logout user if initialisation fails.
@@ -233,6 +508,10 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Use godog v0.8.0 under new name 'cucumber' (instead of DATA-DOG).
 
 ### Fixed
+* CSB-40 panic in credential store.
+* Keyring unlocking locker.
+* No panic on failed html parse.
+* Too many open files.
 * #1057 Logging in to an already logged in user would display unrelated error "invalid mailbox password".
 * #1056 Changing mailbox password sometimes didn't log out user.
 * #1066 Split address mode can not work when credentials store is cleared.
@@ -248,7 +527,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * GODT-103 User keys were not unlocked later if they were not unlocked during startup.
 
 
-## [v1.2.4] Brooklyn beta (2019-12-16)
+## [Bridge 1.2.4] Brooklyn beta (2019-12-16)
 
 ### Added
 * #976: fix slow authentication.
@@ -263,7 +542,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Fixed an issue where entering an in-use port multiple times via the CLI would make bridge use it.
 * Update therecipe/qt and Qt to 5.13.
 
-## [v1.2.3] Akashi - live (2019-11-05) beta (2019-10-22)
+## [Bridge 1.2.3] Akashi - live (2019-11-05) beta (2019-10-22)
 
 ### Added
 * #963 report first-start metric with bridge version.
@@ -293,17 +572,17 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Code made compatible with name changes in go-pmapi.
 
 
-## [v1.2.2] - beta and live 2019-09-06
+## [Bridge 1.2.2] - beta and live 2019-09-06
 
 ### Changed
 * User compare case insensitive.
 
-## [v1.2.1] - beta and live 2019-09-05
+## [Bridge 1.2.1] - beta and live 2019-09-05
 
 ### Changed
 * #924 fix start of bridge without internet connection.
 
-## [v1.2.0] - beta 2019-08-22
+## [Bridge 1.2.0] - beta 2019-08-22
 
 ### Added
 * #903 added http.Client timeout to not hang out forever.
@@ -403,7 +682,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Handle logout in event loop.
 
 
-## [v1.1.6] - 2019-07-09 (beta 2019-07-01)
+## [Bridge 1.1.6] - 2019-07-09 (beta 2019-07-01)
 
 ### Added
 * #841 assume text/plain during sending e-mails when missing content type.
@@ -435,7 +714,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Lint corrections.
 
 
-## [v1.1.5] - 2019-05-23 (beta 2019-05-23, 2019-05-16)
+## [Bridge 1.1.5] - 2019-05-23 (beta 2019-05-23, 2019-05-16)
 
 ### Changed
 * Fix custom message format.
@@ -449,7 +728,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Only one crash from second instance.
 * During event `MessageID` in log as field.
 
-## [v1.1.4 live] - 2019-04-10 (beta 2019-04-05, 2019-03-27)
+## [Bridge 1.1.4 live] - 2019-04-10 (beta 2019-04-05, 2019-03-27)
 
 ### Added
 * Address with port to IMAP debug.
@@ -470,7 +749,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 ### Removed
 * #750 Synchronization after 450 messages.
 
-## [v1.1.3] - 2019-03-04
+## [Bridge 1.1.3] - 2019-03-04
 
 ### Added
 * Sentry crash reporting in main.
@@ -482,13 +761,13 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * #720 sync every 3 pages.
 * #512 extending list of charsets go-pm-mime!4.
 
-## [v1.1.2] - beta only 2019-02-21
+## [Bridge 1.1.2] - beta only 2019-02-21
 
 ### Changed
 * #512 fail on unknown charset.
 * #729 #733 visitor for MIME parsing.
 
-## [v1.1.1] - 2019-02-11
+## [Bridge 1.1.1] - 2019-02-11
 ### Added
 * #671 include `name` param in attachment `Content-Type` (in addition to `Content-Disposition` param `filename`).
 * #671 do not include content headers for section requests e.g. `BODY.PEEK[2]`.
@@ -541,7 +820,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * SMTP stays authenticated after sent message.
 * Reduce memory, processor and number of API calls.
 
-## [v1.1.0] - 2018-10-22
+## [Bridge 1.1.0] - 2018-10-22
 
 ### Removed
 * `go-pmapi.Config.ClientSecret`.
@@ -617,11 +896,11 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Additional synchronization of mail database.
 
 
-## [v1.0.6 silent] - 2018-08-23
+## [Bridge 1.0.6 silent] - 2018-08-23
 ### Added
 * New svg icon in linux package.
 
-## [v1.0.6] - 2018-08-09
+## [Bridge 1.0.6] - 2018-08-09
 
 ### Added
 * `backend.GetUserSettings()`.
@@ -650,7 +929,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Frequent Thunderbird timeout.
 * SMTP requests not case-sensitive.
 
-## [v1.0.5] - 2018-07-12
+## [Bridge 1.0.5] - 2018-07-12
 
 ### Added
 * UpdateCurrentAgent from lastMailClient.
@@ -682,7 +961,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Fixed 7bit MIME issue while sending.
 
 
-## [v1.0.4] - 2018-05-15
+## [Bridge 1.0.4] - 2018-05-15
 
 ### Changed
 * Version files available at both download and static.
@@ -703,11 +982,11 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Notification that outgoing email will be delivered as non-encrypted.
 * NOTE: Due to a change of the keychain format, you will need to add your account(s) to the Bridge after installing this version.
 
-### Bugs fixed
+### Fixed bugs
 * Support accounts with same user names.
 * Support sending vCalendar event.
 
-## [v1.0.3] - 2018-03-26
+## [Bridge 1.0.3] - 2018-03-26
 * All from silent updates plus following.
 
 ### Changed
@@ -742,7 +1021,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 * Remove firewall error message.
 
 
-## [v1.0.2] - 2018-03-12
+## [Bridge 1.0.2] - 2018-03-12
 * All from silent updates plus following.
 
 ### Added
@@ -764,7 +1043,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
 
 
-## [v1.0.1-4 (linux only)] Silent deploy - 2018-02-28
+## [Bridge 1.0.1-4 (linux only)] Silent deploy - 2018-02-28
 
 ### Changed
 * More similar look of window title bar to Windows 10 style.
@@ -788,14 +1067,14 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
 
 
-## [v1.0.1] Silent deploy - 2017-12-30
+## [Bridge 1.0.1] Silent deploy - 2017-12-30
 
 ### Changed
 * Fixed bug with parsing address list (CC became BCC).
 
 
 
-## [v1.0.1] - 2017-12-20
+## [Bridge 1.0.1] - 2017-12-20
 
 ### Added
 * When current log file is more than 10MB open new one, checked every 15min.
@@ -827,7 +1106,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
 
 
-## [v1.0.0] - 2017-12-06
+## [Bridge 1.0.0] - 2017-12-06
 
 ### Added
 * Encoding support of message body, title items, attachment name, for all standard charsets.

Makefile

@@ -3,19 +3,36 @@ export GO111MODULE=on
 # By default, the target OS is the same as the host OS,
 # but this can be overridden by setting TARGET_OS to "windows"/"darwin"/"linux".
 GOOS:=$(shell go env GOOS)
+TARGET_CMD?=Desktop-Bridge
 TARGET_OS?=${GOOS}
 
 ## Build
-.PHONY: build build-nogui check-has-go
+.PHONY: build build-ie build-nogui build-ie-nogui check-has-go
 
-BRIDGE_VERSION?=$(shell git describe --abbrev=0 --tags)-git
+# Keep version hardcoded so app build works also without Git repository.
+BRIDGE_APP_VERSION?=1.5.7-git
+IE_APP_VERSION?=1.2.3-git
+APP_VERSION:=${BRIDGE_APP_VERSION}
+SRC_ICO:=logo.ico
+SRC_ICNS:=Bridge.icns
+SRC_SVG:=logo.svg
+TGT_ICNS:=Bridge.icns
+EXE_NAME:=proton-bridge
+ifeq "${TARGET_CMD}" "Import-Export"
+    APP_VERSION:=${IE_APP_VERSION}
+    SRC_ICO:=ie.ico
+    SRC_ICNS:=ie.icns
+    SRC_SVG:=ie.svg
+    TGT_ICNS:=ImportExport.icns
+    EXE_NAME:=proton-ie
+endif
 REVISION:=$(shell git rev-parse --short=10 HEAD)
 BUILD_TIME:=$(shell date +%FT%T%z)
 
 BUILD_TAGS?=pmapi_prod
 BUILD_FLAGS:=-tags='${BUILD_TAGS}'
 BUILD_FLAGS_NOGUI:=-tags='${BUILD_TAGS} nogui'
-GO_LDFLAGS:=$(addprefix -X github.com/ProtonMail/proton-bridge/pkg/constants.,Version=${BRIDGE_VERSION} Revision=${REVISION} BuildTime=${BUILD_TIME})
+GO_LDFLAGS:=$(addprefix -X github.com/ProtonMail/proton-bridge/pkg/constants.,Version=${APP_VERSION} Revision=${REVISION} BuildTime=${BUILD_TIME})
 ifneq "${BUILD_LDFLAGS}" ""
     GO_LDFLAGS+= ${BUILD_LDFLAGS}
 endif
@@ -23,47 +40,69 @@ GO_LDFLAGS:=-ldflags '${GO_LDFLAGS}'
 BUILD_FLAGS+= ${GO_LDFLAGS}
 BUILD_FLAGS_NOGUI+= ${GO_LDFLAGS}
 
-DEPLOY_DIR:=cmd/Desktop-Bridge/deploy
+DEPLOY_DIR:=cmd/${TARGET_CMD}/deploy
 ICO_FILES:=
-EXE:=$(shell basename ${CURDIR})
+DIRNAME:=$(shell basename ${CURDIR})
-
+EXE:=${EXE_NAME}
+EXE_QT:=${DIRNAME}
 ifeq "${TARGET_OS}" "windows"
     EXE:=${EXE}.exe
-    ICO_FILES:=logo.ico icon.rc icon_windows.syso
+    EXE_QT:=${EXE_QT}.exe
+    ICO_FILES:=${SRC_ICO} icon.rc icon_windows.syso
 endif
 ifeq "${TARGET_OS}" "darwin"
     DARWINAPP_CONTENTS:=${DEPLOY_DIR}/darwin/${EXE}.app/Contents
-    EXE:=${EXE}.app/Contents/MacOS/${EXE}
+    EXE:=${EXE}.app
+    EXE_QT:=${EXE_QT}.app
+    EXE_BINARY_DARWIN:=/Contents/MacOS/${EXE_NAME}
 endif
 EXE_TARGET:=${DEPLOY_DIR}/${TARGET_OS}/${EXE}
-TGZ_TARGET:=bridge_${TARGET_OS}_${REVISION}.tgz
+EXE_QT_TARGET:=${DEPLOY_DIR}/${TARGET_OS}/${EXE_QT}
 
+TGZ_TARGET:=bridge_${TARGET_OS}_${REVISION}.tgz
+ifeq "${TARGET_CMD}" "Import-Export"
+    TGZ_TARGET:=ie_${TARGET_OS}_${REVISION}.tgz
+endif
+
+ifdef QT_API
+    VENDOR_TARGET:=prepare-vendor update-qt-docs
+else
+    VENDOR_TARGET=update-vendor
+endif
 
 build: ${TGZ_TARGET}
+build-ie:
+	TARGET_CMD=Import-Export $(MAKE) build
 
 build-nogui:
-	go build ${BUILD_FLAGS_NOGUI} -o Desktop-Bridge cmd/Desktop-Bridge/main.go
+	go build ${BUILD_FLAGS_NOGUI} -o ${EXE_NAME} cmd/${TARGET_CMD}/main.go
+
+build-ie-nogui:
+	TARGET_CMD=Import-Export $(MAKE) build-nogui
 
 ${TGZ_TARGET}: ${DEPLOY_DIR}/${TARGET_OS}
 	rm -f $@
 	cd ${DEPLOY_DIR} && tar czf ../../../$@ ${TARGET_OS}
 
 ${DEPLOY_DIR}/linux: ${EXE_TARGET}
-	cp -pf ./internal/frontend/share/icons/logo.svg ${DEPLOY_DIR}/linux/
+	cp -pf ./internal/frontend/share/icons/${SRC_SVG} ${DEPLOY_DIR}/linux/logo.svg
 	cp -pf ./LICENSE ${DEPLOY_DIR}/linux/
 	cp -pf ./Changelog.md ${DEPLOY_DIR}/linux/
 
 ${DEPLOY_DIR}/darwin: ${EXE_TARGET}
-	cp ./internal/frontend/share/icons/Bridge.icns ${DARWINAPP_CONTENTS}/Resources/
+	if [ "${DIRNAME}" != "${EXE_NAME}" ]; then \
-	cp -r "utils/addcert.scpt" ${DARWINAPP_CONTENTS}/Resources/
+		mv ${EXE_TARGET}/Contents/MacOS/{${DIRNAME},${EXE_NAME}}; \
+		perl -i -pe"s/>${DIRNAME}/>${EXE_NAME}/g" ${EXE_TARGET}/Contents/Info.plist; \
+	fi
+	cp ./internal/frontend/share/icons/${SRC_ICNS} ${DARWINAPP_CONTENTS}/Resources/${TGT_ICNS}
 	cp LICENSE ${DARWINAPP_CONTENTS}/Resources/
 	rm -rf "${DARWINAPP_CONTENTS}/Frameworks/QtWebEngine.framework"
 	rm -rf "${DARWINAPP_CONTENTS}/Frameworks/QtWebView.framework"
 	rm -rf "${DARWINAPP_CONTENTS}/Frameworks/QtWebEngineCore.framework"
-	./utils/remove_non_relative_links_darwin.sh "${EXE_TARGET}"
+	./utils/remove_non_relative_links_darwin.sh "${EXE_TARGET}${EXE_BINARY_DARWIN}"
 
 ${DEPLOY_DIR}/windows: ${EXE_TARGET}
-	cp ./internal/frontend/share/icons/logo.ico ${DEPLOY_DIR}/windows/
+	cp ./internal/frontend/share/icons/${SRC_ICO} ${DEPLOY_DIR}/windows/logo.ico
 	cp LICENSE ${DEPLOY_DIR}/windows/
 
 QT_BUILD_TARGET:=build desktop
@@ -73,25 +112,24 @@ ifneq "${GOOS}" "${TARGET_OS}"
   endif
 endif
 
-${EXE_TARGET}: check-has-go gofiles ${ICO_FILES} update-vendor
+${EXE_TARGET}: check-has-go gofiles ${ICO_FILES} ${VENDOR_TARGET}
 	rm -rf deploy ${TARGET_OS} ${DEPLOY_DIR}
-	cp cmd/Desktop-Bridge/main.go .
+	cp cmd/${TARGET_CMD}/main.go .
 	qtdeploy ${BUILD_FLAGS} ${QT_BUILD_TARGET}
-	mv deploy cmd/Desktop-Bridge
+	mv deploy cmd/${TARGET_CMD}
+	if [ "${EXE_QT_TARGET}" != "${EXE_TARGET}" ]; then mv ${EXE_QT_TARGET} ${EXE_TARGET}; fi
 	rm -rf ${TARGET_OS} main.go
 
-logo.ico: ./internal/frontend/share/icons/logo.ico
+logo.ico ie.ico: ./internal/frontend/share/icons/${SRC_ICO}
-	cp $^ .
+	cp $^ $@
 icon.rc: ./internal/frontend/share/icon.rc
 	cp $^ .
-./internal/frontend/qt/icon_windows.syso: ./internal/frontend/share/icon.rc  logo.ico 
+icon_windows.syso: icon.rc logo.ico
 	windres --target=pe-x86-64 -o $@ $<
-icon_windows.syso: ./internal/frontend/qt/icon_windows.syso
-	cp $^ .
 
 
 ## Rules for therecipe/qt
-.PHONY: prepare-vendor update-vendor
+.PHONY: prepare-vendor update-vendor update-qt-docs
 THERECIPE_ENV:=github.com/therecipe/env_${TARGET_OS}_amd64_513
 
 # vendor folder will be deleted by gomod hence we cache the big repo
@@ -116,10 +154,12 @@ prepare-vendor:
 update-vendor: vendor-cache/${THERECIPE_ENV} prepare-vendor
 	${LINKCMD}
 
+update-qt-docs:
+	go get github.com/therecipe/qt/internal/binding/files/docs/$(QT_API)
 
 ## Dev dependencies
 .PHONY: install-devel-tools install-linter install-go-mod-outdated
-LINTVER:="v1.27.0"
+LINTVER:="v1.29.0"
 LINTSRC:="https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh"
 
 install-dev-dependencies: install-devel-tools install-linter install-go-mod-outdated
@@ -157,9 +197,12 @@ test: gofiles
 		./internal/frontend/cli/... \
 		./internal/imap/... \
 		./internal/metrics/... \
+		./internal/importexport/... \
 		./internal/preferences/... \
 		./internal/smtp/... \
 		./internal/store/... \
+		./internal/transfer/... \
+		./internal/updates/... \
 		./internal/users/... \
 		./pkg/...
 
@@ -173,17 +216,22 @@ coverage: test
 
 mocks:
 	mockgen --package mocks github.com/ProtonMail/proton-bridge/internal/users Configer,PanicHandler,ClientManager,CredentialsStorer,StoreMaker > internal/users/mocks/mocks.go
-	mockgen --package mocks github.com/ProtonMail/proton-bridge/internal/store PanicHandler,ClientManager,BridgeUser > internal/store/mocks/mocks.go
+	mockgen --package mocks github.com/ProtonMail/proton-bridge/internal/transfer PanicHandler,ClientManager,IMAPClientProvider > internal/transfer/mocks/mocks.go
+	mockgen --package mocks github.com/ProtonMail/proton-bridge/internal/store PanicHandler,ClientManager,BridgeUser,ChangeNotifier > internal/store/mocks/mocks.go
 	mockgen --package mocks github.com/ProtonMail/proton-bridge/pkg/listener Listener > internal/store/mocks/utils_mocks.go
 	mockgen --package mocks github.com/ProtonMail/proton-bridge/pkg/pmapi Client > pkg/pmapi/mocks/mocks.go
 
-lint: lint-golang lint-license
+lint: lint-golang lint-license lint-changelog
 
 lint-license:
 	./utils/missing_license.sh check
 
+lint-changelog:
+	./utils/changelog_linter.sh
+
 lint-golang:
 	which golangci-lint || $(MAKE) install-linter
+	$(info linting with GOMAXPROCS=${GOMAXPROCS})
 	golangci-lint run ./...
 
 updates: install-go-mod-outdated
@@ -196,15 +244,20 @@ doc:
 .PHONY: gofiles
 # Following files are for the whole app so it makes sense to have them in bridge package.
 # (Options like cmd or internal were considered and bridge package is the best place for them.)
-gofiles: ./internal/bridge/credits.go ./internal/bridge/release_notes.go
+gofiles: ./internal/bridge/credits.go ./internal/bridge/release_notes.go ./internal/importexport/credits.go ./internal/importexport/release_notes.go
 ./internal/bridge/credits.go: ./utils/credits.sh go.mod
-	cd ./utils/ && ./credits.sh
+	cd ./utils/ && ./credits.sh bridge
-./internal/bridge/release_notes.go: ./utils/release-notes.sh ./release-notes/notes.txt ./release-notes/bugs.txt
+./internal/bridge/release_notes.go: ./utils/release-notes.sh ./release-notes/notes-bridge.txt ./release-notes/bugs-bridge.txt
-	cd ./utils/ && ./release-notes.sh
+	cd ./utils/ && ./release-notes.sh bridge
+./internal/importexport/credits.go: ./utils/credits.sh go.mod
+	cd ./utils/ && ./credits.sh importexport
+./internal/importexport/release_notes.go: ./utils/release-notes.sh ./release-notes/notes-importexport.txt ./release-notes/bugs-importexport.txt
+	cd ./utils/ && ./release-notes.sh importexport
 
 
 ## Run and debug
-.PHONY: run run-qt run-qt-cli run-nogui run-nogui-cli run-debug qmlpreview qt-fronted-clean clean
+.PHONY: run run-qt run-qt-cli run-nogui run-nogui-cli run-debug run-qml-preview run-ie-qml-preview run-ie run-ie-qt run-ie-qt-cli run-ie-nogui run-ie-nogui-cli clean-vendor clean-frontend-qt clean-frontend-qt-ie clean-frontend-qt-common clean
+
 VERBOSITY?=debug-client
 RUN_FLAGS:=-m -l=${VERBOSITY}
 
@@ -216,24 +269,38 @@ run-qt-cli: ${EXE_TARGET}
 	PROTONMAIL_ENV=dev ./$< ${RUN_FLAGS} -c
 
 run-nogui: clean-vendor gofiles
-	PROTONMAIL_ENV=dev go run ${BUILD_FLAGS_NOGUI} cmd/Desktop-Bridge/main.go ${RUN_FLAGS} | tee last.log
+	PROTONMAIL_ENV=dev go run ${BUILD_FLAGS_NOGUI} cmd/${TARGET_CMD}/main.go ${RUN_FLAGS} | tee last.log
 run-nogui-cli: clean-vendor gofiles
-	PROTONMAIL_ENV=dev go run ${BUILD_FLAGS_NOGUI} cmd/Desktop-Bridge/main.go ${RUN_FLAGS} -c
+	PROTONMAIL_ENV=dev go run ${BUILD_FLAGS_NOGUI} cmd/${TARGET_CMD}/main.go ${RUN_FLAGS} -c
 
 run-debug:
-	PROTONMAIL_ENV=dev dlv debug --build-flags "${BUILD_FLAGS_NOGUI}" cmd/Desktop-Bridge/main.go -- ${RUN_FLAGS}
+	PROTONMAIL_ENV=dev dlv debug --build-flags "${BUILD_FLAGS_NOGUI}" cmd/${TARGET_CMD}/main.go -- ${RUN_FLAGS}
 
 run-qml-preview:
-	make -C internal/frontend/qt -f Makefile.local qmlpreview
+	$(MAKE) -C internal/frontend/qt -f Makefile.local qmlpreview
+run-ie-qml-preview:
+	$(MAKE) -C internal/frontend/qt-ie -f Makefile.local qmlpreview
+
+run-ie:
+	TARGET_CMD=Import-Export $(MAKE) run
+run-ie-qt:
+	TARGET_CMD=Import-Export $(MAKE) run-qt
+run-ie-nogui:
+	TARGET_CMD=Import-Export $(MAKE) run-nogui
 
 clean-frontend-qt:
-	make -C internal/frontend/qt -f Makefile.local clean
+	$(MAKE) -C internal/frontend/qt -f Makefile.local clean
+clean-frontend-qt-ie:
+	$(MAKE) -C internal/frontend/qt-ie -f Makefile.local clean
+clean-frontend-qt-common:
+	$(MAKE) -C internal/frontend/qt-common -f Makefile.local clean
 
-clean-vendor: clean-frontend-qt
+clean-vendor: clean-frontend-qt clean-frontend-qt-ie clean-frontend-qt-common
 	rm -rf ./vendor
 
-clean: clean-frontend-qt
+clean: clean-vendor
 	rm -rf vendor-cache
 	rm -rf cmd/Desktop-Bridge/deploy
-	rm -f build last.log mem.pprof
+	rm -rf cmd/Import-Export/deploy
+	rm -f build last.log mem.pprof main.go
 	rm -rf logo.ico icon.rc icon_windows.syso internal/frontend/qt/icon_windows.syso

README.md

@@ -1,13 +1,13 @@
-# ProtonMail Bridge
+# ProtonMail Bridge and Import Export app
 Copyright (c) 2020 Proton Technologies AG
 
-This repository holds the ProtonMail Bridge application.
+This repository holds the ProtonMail Bridge and the ProtonMail Import-Export applications.
 For a detailed build information see [BUILDS](./BUILDS.md).
-For licensing information see [COPYING](./COPYING.md).
+The license can be found in [LICENSE](./LICENSE) file, for more licensing information see [COPYING_NOTES](./COPYING_NOTES.md).
 For contribution policy see [CONTRIBUTING](./CONTRIBUTING.md).
 
 
-## Description
+## Description Bridge
 ProtonMail Bridge for e-mail clients.
 
 When launched, Bridge will initialize local IMAP/SMTP servers and render 
@@ -24,6 +24,18 @@ background.
 
 More details [on the public website](https://protonmail.com/bridge).
 
+## Description Import-Export app
+ProtonMail Import-Export app for importing and exporting messages.
+
+To transfer messages, firstly log in using your ProtonMail credentials.
+For import, expand your account, and pick the address to which to import
+messages from IMAP server or local EML or MBOX files. For export, pick
+the whole account or only a specific address. Then, in both cases,
+configure transfer rules (match source and target mailboxes, set time
+range limits and so on) and hit start. Once the transfer is complete,
+check the results.
+
+More details [on the public website](https://protonmail.com/import-export).
 
 ## Keychain
 You need to have a keychain in order to run the ProtonMail Bridge. On Mac or
@@ -39,12 +51,13 @@ or
 - `BRIDGESTRICTMODE`: tells bridge to turn on `bbolt`'s "strict mode" which checks the database after every `Commit`. Set to `1` to enable.
 
 ### Dev build or run
-- `BRIDGE_VERSION`: set the bridge app version used during testing or building
+- `APP_VERSION`: set the bridge app version used during testing or building
 - `PROTONMAIL_ENV`: when set to `dev` it is not using Sentry to report crashes
 - `VERBOSITY`: set log level used during test time and by the makefile
 
 ### Integration testing
 - `TEST_ENV`: set which env to use (fake or live)
+- `TEST_APP`: set which app to test (bridge or ie)
 - `TEST_ACCOUNTS`: set JSON file with configured accounts
 - `TAGS`: set build tags for tests
 - `FEATURES`: set feature dir, file or scenario to test

ci/Dockerfile

@@ -1,4 +0,0 @@
-FROM gitlab.protontech.ch:4567/protonmail/ci-containers/go
-
-RUN apt-get -y update
-RUN apt-get -y install openssh-client libsecret-1-dev libgl1-mesa-dev time connect-proxy

cmd/Desktop-Bridge/main.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -35,122 +35,56 @@ package main
 */
 
 import (
-	"fmt"
 	"io/ioutil"
 	"os"
-	"os/exec"
-	"path/filepath"
-	"runtime"
 	"runtime/pprof"
-	"strconv"
-	"strings"
 
 	"github.com/ProtonMail/proton-bridge/internal/api"
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
+	"github.com/ProtonMail/proton-bridge/internal/cmd"
+	"github.com/ProtonMail/proton-bridge/internal/cookies"
 	"github.com/ProtonMail/proton-bridge/internal/events"
 	"github.com/ProtonMail/proton-bridge/internal/frontend"
 	"github.com/ProtonMail/proton-bridge/internal/imap"
 	"github.com/ProtonMail/proton-bridge/internal/preferences"
 	"github.com/ProtonMail/proton-bridge/internal/smtp"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
 	"github.com/ProtonMail/proton-bridge/internal/users/credentials"
-	"github.com/ProtonMail/proton-bridge/pkg/args"
 	"github.com/ProtonMail/proton-bridge/pkg/config"
 	"github.com/ProtonMail/proton-bridge/pkg/constants"
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
-	"github.com/ProtonMail/proton-bridge/pkg/updates"
 	"github.com/allan-simon/go-singleinstance"
-	"github.com/getsentry/raven-go"
 	"github.com/sirupsen/logrus"
 	"github.com/urfave/cli"
 )
 
-// cacheVersion is used for cache files such as lock, events, preferences, user_info, db files.
+const (
-// Different number will drop old files and create new ones.
+	// cacheVersion is used for cache files such as lock, events, preferences, user_info, db files.
-const cacheVersion = "c11"
+	// Different number will drop old files and create new ones.
+	cacheVersion = "c11"
+
+	appName = "bridge"
+)
 
 var (
 	log = logrus.WithField("pkg", "main") //nolint[gochecknoglobals]
-
-	// How many crashes in a row.
-	numberOfCrashes = 0 //nolint[gochecknoglobals]
-
-	// After how many crashes bridge gives up starting.
-	maxAllowedCrashes = 10 //nolint[gochecknoglobals]
 )
 
 func main() {
-	if err := raven.SetDSN(constants.DSNSentry); err != nil {
+	cmd.Main(
-		log.WithError(err).Errorln("Can not setup sentry DSN")
+		"ProtonMail Bridge",
-	}
+		"ProtonMail IMAP and SMTP Bridge",
-	raven.SetRelease(constants.Revision)
+		[]cli.Flag{
-
+			cli.BoolFlag{
-	args.FilterProcessSerialNumberFromArgs()
+				Name:  "no-window",
-	filterRestartNumberFromArgs()
+				Usage: "Don't show window after start"},
-
+			cli.BoolFlag{
-	app := cli.NewApp()
+				Name:  "noninteractive",
-	app.Name = "Protonmail Bridge"
+				Usage: "Start Bridge entirely noninteractively"},
-	app.Version = constants.BuildVersion
+		},
-	app.Flags = []cli.Flag{
+		run,
-		cli.StringFlag{
+	)
-			Name:  "log-level, l",
-			Usage: "Set the log level (one of panic, fatal, error, warn, info, debug, debug-client, debug-server)"},
-		cli.BoolFlag{
-			Name:  "no-window",
-			Usage: "Don't show window after start"},
-		cli.BoolFlag{
-			Name:  "cli, c",
-			Usage: "Use command line interface"},
-		cli.BoolFlag{
-			Name:  "noninteractive",
-			Usage: "Start Bridge entirely noninteractively"},
-		cli.StringFlag{
-			Name:  "version-json, g",
-			Usage: "Generate json version file"},
-		cli.BoolFlag{
-			Name:  "mem-prof, m",
-			Usage: "Generate memory profile"},
-		cli.BoolFlag{
-			Name:  "cpu-prof, p",
-			Usage: "Generate CPU profile"},
-	}
-	app.Usage = "ProtonMail IMAP and SMTP Bridge"
-	app.Action = run
-
-	// Always log the basic info about current bridge.
-	logrus.SetLevel(logrus.InfoLevel)
-	log.WithField("version", constants.Version).
-		WithField("revision", constants.Revision).
-		WithField("runtime", runtime.GOOS).
-		WithField("build", constants.BuildTime).
-		WithField("args", os.Args).
-		WithField("appLong", app.Name).
-		WithField("appShort", constants.AppShortName).
-		Info("Run app")
-	if err := app.Run(os.Args); err != nil {
-		log.Error("Program exited with error: ", err)
-	}
-}
-
-type panicHandler struct {
-	cfg *config.Config
-	err *error // Pointer to error of cli action.
-}
-
-func (ph *panicHandler) HandlePanic() {
-	r := recover()
-	if r == nil {
-		return
-	}
-
-	config.HandlePanic(ph.cfg, fmt.Sprintf("Recover: %v", r))
-	frontend.HandlePanic()
-
-	*ph.err = cli.NewExitError("Panic and restart", 666)
-	numberOfCrashes++
-	log.Error("Restarting after panic")
-	restartApp()
-	os.Exit(666)
 }
 
 // run initializes and starts everything in a precise order.
@@ -158,13 +92,17 @@ func (ph *panicHandler) HandlePanic() {
 // IMPORTANT: ***Read the comments before CHANGING the order ***
 func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	// We need to have config instance to setup a logs, panic handler, etc ...
-	cfg := config.New(constants.AppShortName, constants.Version, constants.Revision, cacheVersion)
+	cfg := config.New(appName, constants.Version, constants.Revision, cacheVersion)
 
 	// We want to know about any problem. Our PanicHandler calls sentry which is
 	// not dependent on anything else. If that fails, it tries to create crash
 	// report which will not be possible if no folder can be created. That's the
 	// only problem we will not be notified about in any way.
-	panicHandler := &panicHandler{cfg, &contextError}
+	panicHandler := &cmd.PanicHandler{
+		AppName: "ProtonMail Bridge",
+		Config:  cfg,
+		Err:     &contextError,
+	}
 	defer panicHandler.HandlePanic()
 
 	// First we need config and create necessary folder; it's dependency for everything.
@@ -176,13 +114,6 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	logLevel := context.GlobalString("log-level")
 	debugClient, debugServer := config.SetupLog(cfg, logLevel)
 
-	// Should be called after logs are configured but before preferences are created.
-	migratePreferencesFromC10(cfg)
-
-	if err := cfg.ClearOldData(); err != nil {
-		log.Error("Cannot clear old data: ", err)
-	}
-
 	// Doesn't make sense to continue when Bridge was invoked with wrong arguments.
 	// We should tell that to the user before we do anything else.
 	if context.Args().First() != "" {
@@ -192,21 +123,16 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 
 	// It's safe to get version JSON file even when other instance is running.
 	// (thus we put it before check of presence of other Bridge instance).
-	updates := updates.New(
+	updates := updates.NewBridge(cfg.GetUpdateDir())
-		constants.AppShortName,
-		constants.Version,
-		constants.Revision,
-		constants.BuildTime,
-		bridge.ReleaseNotes,
-		bridge.ReleaseFixedBugs,
-		cfg.GetUpdateDir(),
-	)
 
 	if dir := context.GlobalString("version-json"); dir != "" {
-		generateVersionFiles(updates, dir)
+		cmd.GenerateVersionFiles(updates, dir)
 		return nil
 	}
 
+	// Should be called after logs are configured but before preferences are created.
+	migratePreferencesFromC10(cfg)
+
 	// ClearOldData before starting new bridge to do a proper setup.
 	//
 	// IMPORTANT: If you the change position of this you will need to wait
@@ -233,7 +159,7 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	if err != nil {
 		log.Warn("Bridge is already running")
 		if err := api.CheckOtherInstanceAndFocus(pref.GetInt(preferences.APIPortKey), tls); err != nil {
-			numberOfCrashes = maxAllowedCrashes
+			cmd.DisableRestart()
 			log.Error("Second instance: ", err)
 		}
 		return cli.NewExitError("Bridge is already running.", 3)
@@ -242,18 +168,12 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 
 	// In case user wants to do CPU or memory profiles...
 	if doCPUProfile := context.GlobalBool("cpu-prof"); doCPUProfile {
-		f, err := os.Create("cpu.pprof")
+		cmd.StartCPUProfile()
-		if err != nil {
-			log.Fatal("Could not create CPU profile: ", err)
-		}
-		if err := pprof.StartCPUProfile(f); err != nil {
-			log.Fatal("Could not start CPU profile: ", err)
-		}
 		defer pprof.StopCPUProfile()
 	}
 
 	if doMemoryProfile := context.GlobalBool("mem-prof"); doMemoryProfile {
-		defer makeMemoryProfile()
+		defer cmd.MakeMemoryProfile()
 	}
 
 	// Now we initialize all Bridge parts.
@@ -261,7 +181,7 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	eventListener := listener.New()
 	events.SetupEvents(eventListener)
 
-	credentialsStore, credentialsError := credentials.NewStore("bridge")
+	credentialsStore, credentialsError := credentials.NewStore(appName)
 	if credentialsError != nil {
 		log.Error("Could not get credentials store: ", credentialsError)
 	}
@@ -273,6 +193,14 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	// implementation depending on whether build flag pmapi_prod is used or not.
 	cm.SetRoundTripper(cfg.GetRoundTripper(cm, eventListener))
 
+	// Cookies must be persisted across restarts.
+	jar, err := cookies.NewCookieJar(pref)
+	if err != nil {
+		logrus.WithError(err).Warn("Could not create cookie jar")
+	} else {
+		cm.SetCookieJar(jar)
+	}
+
 	bridgeInstance := bridge.New(cfg, pref, panicHandler, eventListener, cm, credentialsStore)
 	imapBackend := imap.NewIMAPBackend(panicHandler, eventListener, cfg, bridgeInstance)
 	smtpBackend := smtp.NewSMTPBackend(panicHandler, eventListener, pref, bridgeInstance)
@@ -329,7 +257,7 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 	}
 
 	if frontend.IsAppRestarting() {
-		restartApp()
+		cmd.RestartApp()
 	}
 
 	return nil
@@ -339,7 +267,7 @@ func run(context *cli.Context) (contextError error) { // nolint[funlen]
 // It will happen only when c10/prefs.json exists and c11/prefs.json not.
 // No configuration changed between c10 and c11 versions.
 func migratePreferencesFromC10(cfg *config.Config) {
-	pref10Path := config.New(constants.AppShortName, constants.Version, constants.Revision, "c10").GetPreferencesPath()
+	pref10Path := config.New(appName, constants.Version, constants.Revision, "c10").GetPreferencesPath()
 	if _, err := os.Stat(pref10Path); os.IsNotExist(err) {
 		log.WithField("path", pref10Path).Trace("Old preferences does not exist, migration skipped")
 		return
@@ -365,68 +293,3 @@ func migratePreferencesFromC10(cfg *config.Config) {
 
 	log.Info("Preferences migrated")
 }
-
-// generateVersionFiles writes a JSON file with details about current build.
-// Those files are used for upgrading the app.
-func generateVersionFiles(updates *updates.Updates, dir string) {
-	log.Info("Generating version files")
-	for _, goos := range []string{"windows", "darwin", "linux"} {
-		log.Debug("Generating JSON for ", goos)
-		if err := updates.CreateJSONAndSign(dir, goos); err != nil {
-			log.Error(err)
-		}
-	}
-}
-
-func makeMemoryProfile() {
-	name := "./mem.pprof"
-	f, err := os.Create(name)
-	if err != nil {
-		log.Error("Could not create memory profile: ", err)
-	}
-	if abs, err := filepath.Abs(name); err == nil {
-		name = abs
-	}
-	log.Info("Writing memory profile to ", name)
-	runtime.GC() // get up-to-date statistics
-	if err := pprof.WriteHeapProfile(f); err != nil {
-		log.Error("Could not write memory profile: ", err)
-	}
-	_ = f.Close()
-}
-
-// filterRestartNumberFromArgs removes flag with a number how many restart we already did.
-// See restartApp how that number is used.
-func filterRestartNumberFromArgs() {
-	tmp := os.Args[:0]
-	for i, arg := range os.Args {
-		if !strings.HasPrefix(arg, "--restart_") {
-			tmp = append(tmp, arg)
-			continue
-		}
-		var err error
-		numberOfCrashes, err = strconv.Atoi(os.Args[i][10:])
-		if err != nil {
-			numberOfCrashes = maxAllowedCrashes
-		}
-	}
-	os.Args = tmp
-}
-
-// restartApp starts a new instance in background.
-func restartApp() {
-	if numberOfCrashes >= maxAllowedCrashes {
-		log.Error("Too many crashes")
-		return
-	}
-	if exeFile, err := os.Executable(); err == nil {
-		arguments := append(os.Args[1:], fmt.Sprintf("--restart_%d", numberOfCrashes))
-		cmd := exec.Command(exeFile, arguments...) //nolint[gosec]
-		cmd.Stdout = os.Stdout
-		cmd.Stderr = os.Stderr
-		cmd.Stdin = os.Stdin
-		if err := cmd.Start(); err != nil {
-			log.Error("Restart failed: ", err)
-		}
-	}
-}

cmd/Import-Export/main.go

@@ -0,0 +1,177 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"runtime/pprof"
+
+	"github.com/ProtonMail/proton-bridge/internal/cmd"
+	"github.com/ProtonMail/proton-bridge/internal/cookies"
+	"github.com/ProtonMail/proton-bridge/internal/events"
+	"github.com/ProtonMail/proton-bridge/internal/frontend"
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
+	"github.com/ProtonMail/proton-bridge/internal/preferences"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
+	"github.com/ProtonMail/proton-bridge/internal/users/credentials"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/constants"
+	"github.com/ProtonMail/proton-bridge/pkg/listener"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/allan-simon/go-singleinstance"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli"
+)
+
+const (
+	// cacheVersion is used for cache files such as lock, or preferences.
+	// Different number will drop old files and create new ones.
+	cacheVersion = "c11"
+
+	appName     = "importExport"
+	appNameDash = "import-export-app"
+)
+
+var (
+	log = logrus.WithField("pkg", "main") //nolint[gochecknoglobals]
+)
+
+func main() {
+	cmd.Main(
+		"ProtonMail Import-Export",
+		"ProtonMail Import-Export app",
+		nil,
+		run,
+	)
+}
+
+// run initializes and starts everything in a precise order.
+//
+// IMPORTANT: ***Read the comments before CHANGING the order ***
+func run(context *cli.Context) (contextError error) { // nolint[funlen]
+	// We need to have config instance to setup a logs, panic handler, etc ...
+	cfg := config.New(appName, constants.Version, constants.Revision, cacheVersion)
+
+	// We want to know about any problem. Our PanicHandler calls sentry which is
+	// not dependent on anything else. If that fails, it tries to create crash
+	// report which will not be possible if no folder can be created. That's the
+	// only problem we will not be notified about in any way.
+	panicHandler := &cmd.PanicHandler{
+		AppName: "ProtonMail Import-Export app",
+		Config:  cfg,
+		Err:     &contextError,
+	}
+	defer panicHandler.HandlePanic()
+
+	// First we need config and create necessary folder; it's dependency for everything.
+	if err := cfg.CreateDirs(); err != nil {
+		log.Fatal("Cannot create necessary folders: ", err)
+	}
+
+	// Setup of logs should be as soon as possible to ensure we record every wanted report in the log.
+	logLevel := context.GlobalString("log-level")
+	_, _ = config.SetupLog(cfg, logLevel)
+
+	// Doesn't make sense to continue when Import-Export was invoked with wrong arguments.
+	// We should tell that to the user before we do anything else.
+	if context.Args().First() != "" {
+		_ = cli.ShowAppHelp(context)
+		return cli.NewExitError("Unknown argument", 4)
+	}
+
+	// It's safe to get version JSON file even when other instance is running.
+	// (thus we put it before check of presence of other Import-Export instance).
+	updates := updates.NewImportExport(cfg.GetUpdateDir())
+
+	if dir := context.GlobalString("version-json"); dir != "" {
+		cmd.GenerateVersionFiles(updates, dir)
+		return nil
+	}
+
+	// Now we can try to proceed with starting the Import-Export. First we need to ensure
+	// this is the only instance. If not, we will end and focus the existing one.
+	lock, err := singleinstance.CreateLockFile(cfg.GetLockPath())
+	if err != nil {
+		log.Warn("Import-Export app is already running")
+		return cli.NewExitError("Import-Export app is already running.", 3)
+	}
+	defer lock.Close() //nolint[errcheck]
+
+	// In case user wants to do CPU or memory profiles...
+	if doCPUProfile := context.GlobalBool("cpu-prof"); doCPUProfile {
+		cmd.StartCPUProfile()
+		defer pprof.StopCPUProfile()
+	}
+
+	if doMemoryProfile := context.GlobalBool("mem-prof"); doMemoryProfile {
+		defer cmd.MakeMemoryProfile()
+	}
+
+	// Now we initialize all Import-Export parts.
+	log.Debug("Initializing import-export...")
+	eventListener := listener.New()
+	events.SetupEvents(eventListener)
+
+	credentialsStore, credentialsError := credentials.NewStore(appNameDash)
+	if credentialsError != nil {
+		log.Error("Could not get credentials store: ", credentialsError)
+	}
+
+	cm := pmapi.NewClientManager(cfg.GetAPIConfig())
+
+	// Different build types have different roundtrippers (e.g. we want to enable
+	// TLS fingerprint checks in production builds). GetRoundTripper has a different
+	// implementation depending on whether build flag pmapi_prod is used or not.
+	cm.SetRoundTripper(cfg.GetRoundTripper(cm, eventListener))
+
+	pref := preferences.New(cfg)
+
+	// Cookies must be persisted across restarts.
+	jar, err := cookies.NewCookieJar(pref)
+	if err != nil {
+		logrus.WithError(err).Warn("Could not create cookie jar")
+	} else {
+		cm.SetCookieJar(jar)
+	}
+
+	importexportInstance := importexport.New(cfg, panicHandler, eventListener, cm, credentialsStore)
+
+	// Decide about frontend mode before initializing rest of import-export.
+	var frontendMode string
+	switch {
+	case context.GlobalBool("cli"):
+		frontendMode = "cli"
+	default:
+		frontendMode = "qt"
+	}
+	log.WithField("mode", frontendMode).Debug("Determined frontend mode to use")
+
+	frontend := frontend.NewImportExport(constants.Version, constants.BuildVersion, frontendMode, panicHandler, cfg, eventListener, updates, importexportInstance)
+
+	// Last part is to start everything.
+	log.Debug("Starting frontend...")
+	if err := frontend.Loop(credentialsError); err != nil {
+		log.Error("Frontend failed with error: ", err)
+		return cli.NewExitError("Frontend error", 2)
+	}
+
+	if frontend.IsAppRestarting() {
+		cmd.RestartApp()
+	}
+
+	return nil
+}

doc/importexport.md

@@ -0,0 +1,135 @@
+# Import-Export app
+
+## Main blocks
+
+This is basic overview of the main Import-Export blocks.
+
+```mermaid
+graph LR
+    S[ProtonMail server]
+    U[User]
+
+    subgraph "Import-Export app"
+        Users
+        Frontend["Qt / CLI"]
+        ImportExport
+        Transfer
+
+        Frontend --> ImportExport
+        Frontend --> Transfer
+        ImportExport --> Users
+        ImportExport --> Transfer
+    end
+
+    EML --> Transfer
+    MBOX --> Transfer
+    IMAP --> Transfer
+    S --> Transfer
+
+    Transfer --> EML
+    Transfer --> MBOX
+    Transfer --> S
+
+    U --> Frontend
+```
+
+## Code structure
+
+More detailed graph of main types used in Import-Export app and connection between them.
+
+```mermaid
+graph TD
+    PM[ProtonMail Server]
+    EML[EML]
+    MBOX[MBOX]
+    IMAP[IMAP]
+
+    subgraph "Import-Export app"
+        subgraph "pkg users"
+            subgraph "pkg credentials"
+                CredStore[Store]
+                Creds[Credentials]
+
+                CredStore --> Creds
+            end
+
+            US[Users]
+            U[User]
+
+            US --> U
+        end
+
+        subgraph "pkg frontend"
+            CLI
+            Qt
+        end
+
+        subgraph "pkg importExport"
+            IE[ImportExport]
+        end
+
+        subgraph "pkg transfer"
+            Transfer
+            Rules
+            Progress
+
+            Provider
+            LocalProvider
+            EMLProvider
+            MBOXProvider
+            IMAPProvider
+            PMAPIProvider
+
+            Mailbox
+            Message
+
+            Transfer --> |source|Provider
+            Transfer --> |target|Provider
+            Transfer --> Rules
+            Transfer --> Progress
+
+            Provider --> LocalProvider
+            Provider --> EMLProvider
+            Provider --> MBOXProvider
+            Provider --> IMAPProvider
+            Provider --> PMAPIProvider
+
+            LocalProvider --> EMLProvider
+            LocalProvider --> MBOXProvider
+
+            Provider --> Mailbox
+            Provider --> Message
+
+        end
+
+        subgraph PMAPI
+            APIM[ClientManager]
+            APIC[Client]
+
+            APIM --> APIC
+        end
+    end
+
+    CLI --> IE
+    CLI --> Transfer
+    CLI --> Progress
+    Qt --> IE
+    Qt --> Transfer
+    Qt --> Progress
+
+    U --> CredStore
+    U --> Creds
+
+    US --> APIM
+    U --> APIM
+
+    PMAPIProvider --> APIM
+    EMLProvider --> EML
+    MBOXProvider --> MBOX
+    IMAPProvider --> IMAP
+
+    IE --> US
+    IE --> Transfer
+
+    APIC --> PM
+```

doc/index.md

@@ -2,8 +2,13 @@
 
 Documentation pages in order to read for a novice:
 
-* [Development cycle](development.md)
+## Bridge
+
 * [Bridge code](bridge.md)
 * [Internal Bridge database](database.md)
 * [Communication between Bridge, Client and Server](communication.md)
 * [Encryption](encryption.md)
+
+## Import-Export app
+
+* [Import-Export code](importexport.md)

go.mod

@@ -6,69 +6,74 @@ go 1.13
 // They are in a separate require block to highlight this.
 require (
 	github.com/docker/docker-credential-helpers v0.6.3
-	github.com/emersion/go-smtp v0.0.0-20180712174835-db5eec195e67
+	github.com/emersion/go-imap v1.0.6-0.20200708083111-011063d6c9df
 	github.com/jameskeane/bcrypt v0.0.0-20170924085257-7509ea014998
-	golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550
+	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
 )
 
 require (
 	github.com/0xAX/notificator v0.0.0-20191016112426-3962a5ea8da1
+	github.com/Masterminds/semver/v3 v3.1.0
 	github.com/ProtonMail/go-appdir v1.1.0
 	github.com/ProtonMail/go-apple-mobileconfig v0.0.0-20160701194735-7ea9927a11f6
 	github.com/ProtonMail/go-autostart v0.0.0-20181114175602-c5272053443a
 	github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde
+	github.com/ProtonMail/go-rfc5322 v0.5.0
 	github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5
 	github.com/ProtonMail/gopenpgp/v2 v2.0.1
+	github.com/PuerkitoBio/goquery v1.5.1
 	github.com/abiosoft/ishell v2.0.0+incompatible
 	github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db // indirect
 	github.com/allan-simon/go-singleinstance v0.0.0-20160830203053-79edcfdc2dfc
-	github.com/andybalholm/cascadia v1.1.0
-	github.com/certifi/gocertifi v0.0.0-20200211180108-c7c1fbc02894 // indirect
 	github.com/chzyer/logex v1.1.10 // indirect
 	github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1 // indirect
 	github.com/cucumber/godog v0.8.1
-	github.com/emersion/go-imap v1.0.6-0.20200708083111-011063d6c9df
 	github.com/emersion/go-imap-appendlimit v0.0.0-20190308131241-25671c986a6a
 	github.com/emersion/go-imap-idle v0.0.0-20200601154248-f05f54664cc4
 	github.com/emersion/go-imap-move v0.0.0-20190710073258-6e5a51a5b342
 	github.com/emersion/go-imap-quota v0.0.0-20200423100218-dcfd1b7d2b41
-	github.com/emersion/go-imap-specialuse v0.0.0-20161227184202-ba031ced6a62
 	github.com/emersion/go-imap-unselect v0.0.0-20171113212723-b985794e5f26
-	github.com/emersion/go-sasl v0.0.0-20191210011802-430746ea8b9b
+	github.com/emersion/go-mbox v1.0.2
-	github.com/emersion/go-textwrapper v0.0.0-20160606182133-d0e65e56babe
+	github.com/emersion/go-message v0.12.1-0.20201221184100-40c3f864532b
+	github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21
+	github.com/emersion/go-smtp v0.14.0
+	github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594
 	github.com/emersion/go-vcard v0.0.0-20190105225839-8856043f13c5 // indirect
 	github.com/fatih/color v1.9.0
 	github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
-	github.com/getsentry/raven-go v0.2.0
+	github.com/getsentry/sentry-go v0.8.0
-	github.com/go-resty/resty/v2 v2.2.0
+	github.com/go-resty/resty/v2 v2.3.0
-	github.com/golang/mock v1.4.3
+	github.com/golang/mock v1.4.4
-	github.com/google/go-cmp v0.4.0
+	github.com/google/go-cmp v0.5.1
+	github.com/google/uuid v1.1.1
 	github.com/gopherjs/gopherjs v0.0.0-20190430165422-3e4dfb77656c // indirect
-	github.com/hashicorp/go-multierror v1.0.0
+	github.com/hashicorp/go-multierror v1.1.0
-	github.com/jaytaylor/html2text v0.0.0-20200220170450-61d9dc4d7195
+	github.com/jaytaylor/html2text v0.0.0-20200412013138-3577fbdbcff7
-	github.com/jhillyerd/enmime v0.8.0
 	github.com/kardianos/osext v0.0.0-20190222173326-2bc1f35cddc0
-	github.com/keybase/go-keychain v0.0.0-20200218013740-86d4642e4ce2
+	github.com/keybase/go-keychain v0.0.0-20200502122510-cda31fe0c86d
-	github.com/logrusorgru/aurora v0.0.0-20200102142835-e9ef32dff381
+	github.com/logrusorgru/aurora v2.0.3+incompatible
-	github.com/miekg/dns v1.1.29
+	github.com/mattn/go-runewidth v0.0.9 // indirect
+	github.com/miekg/dns v1.1.30
 	github.com/myesui/uuid v1.0.0 // indirect
-	github.com/nsf/jsondiff v0.0.0-20190712045011-8443391ee9b6
+	github.com/nsf/jsondiff v0.0.0-20200515183724-f29ed568f4ce
+	github.com/olekukonko/tablewriter v0.0.4 // indirect
 	github.com/pkg/errors v0.9.1
-	github.com/sirupsen/logrus v1.4.2
+	github.com/sirupsen/logrus v1.7.0
 	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966
-	github.com/stretchr/testify v1.5.1
+	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
-	github.com/therecipe/qt v0.0.0-20200126204426-5074eb6d8c41
+	github.com/stretchr/testify v1.6.1
+	github.com/therecipe/qt v0.0.0-20200701200531-7f61353ee73e
 	github.com/twinj/uuid v1.0.0 // indirect
-	github.com/urfave/cli v1.22.3
+	github.com/urfave/cli v1.22.4
 	go.etcd.io/bbolt v1.3.5
-	golang.org/x/net v0.0.0-20200301022130-244492dfa37a
+	golang.org/x/net v0.0.0-20200707034311-ab3426394381
-	golang.org/x/text v0.3.2
+	golang.org/x/text v0.3.5-0.20201125200606-c27b9fd57aec
 	gopkg.in/stretchr/testify.v1 v1.2.2 // indirect
 )
 
 replace (
 	github.com/docker/docker-credential-helpers => github.com/ProtonMail/docker-credential-helpers v1.1.0
-	github.com/emersion/go-smtp => github.com/ProtonMail/go-smtp v0.0.0-20181206232543-8261df20d309
+	github.com/emersion/go-imap => github.com/ProtonMail/go-imap v0.0.0-20201228133358-4db68cea0cac
 	github.com/jameskeane/bcrypt => github.com/ProtonMail/bcrypt v0.0.0-20170924085257-7509ea014998
-	golang.org/x/crypto => github.com/ProtonMail/crypto v0.0.0-20200416114516-1fa7f403fb9c
+	golang.org/x/crypto => github.com/ProtonMail/crypto v0.0.0-20200818122824-ed5d25e28db8
 )

go.sum

@@ -1,10 +1,16 @@
 github.com/0xAX/notificator v0.0.0-20191016112426-3962a5ea8da1 h1:j9HaafapDbPbGRDku6e/HRs6KBMcKHiWcm1/9Sbxnl4=
 github.com/0xAX/notificator v0.0.0-20191016112426-3962a5ea8da1/go.mod h1:NtXa9WwQsukMHZpjNakTTz0LArxvGYdPA9CjIcUSZ6s=
+github.com/AndreasBriese/bbloom v0.0.0-20190306092124-e2d15f34fcf9/go.mod h1:bOvUY6CB00SOBii9/FifXqc0awNKxLFCL/+pkDPuyl8=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53/go.mod h1:+3IMCy2vIlbG1XG/0ggNQv0SvxCAIpPM5b1nCz56Xno=
+github.com/CloudyKit/jet/v3 v3.0.0/go.mod h1:HKQPgSJmdK8hdoAbKUUWajkHyHo4RaU5rMdUywE7VMo=
+github.com/Joker/hpp v1.0.0/go.mod h1:8x5n+M1Hp5hC0g8okX3sR3vFQwynaX/UgSOM9MeBKzY=
+github.com/Masterminds/semver/v3 v3.1.0 h1:Y2lUDsFKVRSYGojLJ1yLxSXdMmMYTYls0rCvoqmMUQk=
+github.com/Masterminds/semver/v3 v3.1.0/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/ProtonMail/bcrypt v0.0.0-20170924085257-7509ea014998 h1:YT2uVwQiRQZxCaaahwfcgTq2j3j66w00n/27gb/zubs=
 github.com/ProtonMail/bcrypt v0.0.0-20170924085257-7509ea014998/go.mod h1:HecWFHognK8GfRDGnFQbW/LiV7A3MX3gZVs45vk5h8I=
-github.com/ProtonMail/crypto v0.0.0-20200416114516-1fa7f403fb9c h1:DAvlgde2Stu18slmjwikiMPs/CKPV35wSvmJS34z0FU=
+github.com/ProtonMail/crypto v0.0.0-20200818122824-ed5d25e28db8 h1:u1j0xLTrCHpNS40B6m4Sv3IVUz5m9jt+AnTIopT3IgM=
-github.com/ProtonMail/crypto v0.0.0-20200416114516-1fa7f403fb9c/go.mod h1:Pxr7w4gA2ikI4sWyYwEffm+oew1WAJHzG1SiDpQMkrI=
+github.com/ProtonMail/crypto v0.0.0-20200818122824-ed5d25e28db8/go.mod h1:Pxr7w4gA2ikI4sWyYwEffm+oew1WAJHzG1SiDpQMkrI=
 github.com/ProtonMail/docker-credential-helpers v1.1.0 h1:+kvUIpwWcbtP3WFv5sSvkFn/XLzSqPOB5AAthuk9xPk=
 github.com/ProtonMail/docker-credential-helpers v1.1.0/go.mod h1:mK0aBveCxhnQ756AmaTfXMZDeULvheYVhF/MWMErN5g=
 github.com/ProtonMail/go-appdir v1.1.0 h1:9hdNDlU9kTqRKVNzmoqah8qqrj5QZyLByQdwQNlFWig=
@@ -13,34 +19,49 @@ github.com/ProtonMail/go-apple-mobileconfig v0.0.0-20160701194735-7ea9927a11f6 h
 github.com/ProtonMail/go-apple-mobileconfig v0.0.0-20160701194735-7ea9927a11f6/go.mod h1:EtDfBMIDWmVe4viZCuBTEfe3OIIo0ghbpOaAZVO+hVg=
 github.com/ProtonMail/go-autostart v0.0.0-20181114175602-c5272053443a h1:fXK2KsfnkBV9Nh+9SKzHchYjuE9s0vI20JG1mbtEAcc=
 github.com/ProtonMail/go-autostart v0.0.0-20181114175602-c5272053443a/go.mod h1:oTGdE7/DlWIr23G0IKW3OXK9wZ5Hw1GGiaJFccTvZi4=
+github.com/ProtonMail/go-imap v0.0.0-20201228133358-4db68cea0cac h1:2xU3QncAiS/W3UlWZTkbNKW5WkLzk6Egl1T0xX+sbjs=
+github.com/ProtonMail/go-imap v0.0.0-20201228133358-4db68cea0cac/go.mod h1:yKASt+C3ZiDAiCSssxg9caIckWF/JG7ZQTO7GAmvicU=
 github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde h1:5koQozTDELymYOyFbQ/VSubexAEXzDR8qGM5mO8GRdw=
 github.com/ProtonMail/go-imap-id v0.0.0-20190926060100-f94a56b9ecde/go.mod h1:795VPXcRUIQ9JyMNHP4el582VokQfippgjkQP3Gk0r0=
 github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a h1:W6RrgN/sTxg1msqzFFb+G80MFmpjMw61IU+slm+wln4=
 github.com/ProtonMail/go-mime v0.0.0-20190923161245-9b5a4261663a/go.mod h1:NYt+V3/4rEeDuaev/zw1zCq8uqVEuPHzDPo3OZrlGJ4=
-github.com/ProtonMail/go-smtp v0.0.0-20181206232543-8261df20d309 h1:2pzfKjhBjSnw3BgmfTYRFQr1rFGxhfhUY0KKkg+RYxE=
+github.com/ProtonMail/go-rfc5322 v0.4.0 h1:H6RJNNu+xdkG7A3xKU+dV9sP8/w2K4e7pz1R2FM8kd8=
-github.com/ProtonMail/go-smtp v0.0.0-20181206232543-8261df20d309/go.mod h1:6UoBvDAMA/cTBwS3Y7tGpKnY5RH1F1uYHschT6eqAkI=
+github.com/ProtonMail/go-rfc5322 v0.4.0/go.mod h1:mzZWlMWnQJuYLL7JpzuPF5+FimV2lZ9f0jeq24kJjpU=
+github.com/ProtonMail/go-rfc5322 v0.5.0 h1:LbKWjgfvumYZCr8BgGyTUk3ETGkFLAjQdkuSUpZ5CcE=
+github.com/ProtonMail/go-rfc5322 v0.5.0/go.mod h1:mzZWlMWnQJuYLL7JpzuPF5+FimV2lZ9f0jeq24kJjpU=
 github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5 h1:Uga1DHFN4GUxuDQr0F71tpi8I9HqPIlZodZAI1lR6VQ=
 github.com/ProtonMail/go-vcard v0.0.0-20180326232728-33aaa0a0c8a5/go.mod h1:oeP9CMN+ajWp5jKp1kue5daJNwMMxLF+ujPaUIoJWlA=
 github.com/ProtonMail/gopenpgp/v2 v2.0.1 h1:x0uvDhry5WzoHeJO4J3dgMLhG4Z9PeBJ2O+sDOY0LcU=
 github.com/ProtonMail/gopenpgp/v2 v2.0.1/go.mod h1:wQQCJo7DURO6S9VwH+kSDEYs/B63yZnAEfGlOg8YNBY=
+github.com/PuerkitoBio/goquery v1.5.1 h1:PSPBGne8NIUWw+/7vFBV+kG2J/5MOjbzc7154OaKCSE=
+github.com/PuerkitoBio/goquery v1.5.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
+github.com/Shopify/goreferrer v0.0.0-20181106222321-ec9c9a553398/go.mod h1:a1uqRtAwp2Xwc6WNPJEufxJ7fx3npB4UV/JOLmbu5I0=
 github.com/abiosoft/ishell v2.0.0+incompatible h1:zpwIuEHc37EzrsIYah3cpevrIc8Oma7oZPxr03tlmmw=
 github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db h1:CjPUSXOiYptLbTdr1RceuZgSFDQ7U15ITERUGrUORx8=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db/go.mod h1:rB3B4rKii8V21ydCbIzH5hZiCQE7f5E9SzUb/ZZx530=
+github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
 github.com/allan-simon/go-singleinstance v0.0.0-20160830203053-79edcfdc2dfc h1:mZca0/HZ/XWXP9txkfdl2GH6mUzBqAlyJz3u5Lg8fuA=
 github.com/allan-simon/go-singleinstance v0.0.0-20160830203053-79edcfdc2dfc/go.mod h1:qqsTQiwdyqxU05iDCsi0oN3P4nrVxAmn8xCtODDSf/U=
 github.com/andybalholm/cascadia v1.1.0 h1:BuuO6sSfQNFRu1LppgbD25Hr2vLYW25JvxHs5zzsLTo=
 github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
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 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20191120175047-4206685974f2/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/api/api.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/api/ctx.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/api/focus.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/bridge/bridge.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -25,6 +25,7 @@ import (
 	"github.com/ProtonMail/proton-bridge/internal/metrics"
 	"github.com/ProtonMail/proton-bridge/internal/preferences"
 	"github.com/ProtonMail/proton-bridge/internal/users"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
 
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 	logrus "github.com/sirupsen/logrus"
@@ -60,7 +61,7 @@ func New(
 	}
 
 	storeFactory := newStoreFactory(config, panicHandler, clientManager, eventListener)
-	u := users.New(config, panicHandler, eventListener, clientManager, credStorer, storeFactory)
+	u := users.New(config, panicHandler, eventListener, clientManager, credStorer, storeFactory, true)
 	b := &Bridge{
 		Users: u,
 
@@ -70,6 +71,7 @@ func New(
 
 	if pref.GetBool(preferences.FirstStartKey) {
 		b.SendMetric(metrics.New(metrics.Setup, metrics.FirstStart, metrics.Label(config.GetVersion())))
+		pref.SetBool(preferences.FirstStartKey, false)
 	}
 
 	go b.heartbeat()
@@ -129,15 +131,17 @@ func (b *Bridge) ReportBug(osType, osVersion, description, accountName, address,
 	defer c.Logout()
 
 	title := "[Bridge] Bug"
-	if err := c.ReportBugWithEmailClient(
+	report := pmapi.ReportReq{
-		osType,
+		OS:          osType,
-		osVersion,
+		OSVersion:   osVersion,
-		title,
+		Browser:     emailClient,
-		description,
+		Title:       title,
-		accountName,
+		Description: description,
-		address,
+		Username:    accountName,
-		emailClient,
+		Email:       address,
-	); err != nil {
+	}
+
+	if err := c.Report(report); err != nil {
 		log.Error("Reporting bug failed: ", err)
 		return err
 	}

internal/bridge/constants.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/bridge/credits.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -15,8 +15,8 @@
 // You should have received a copy of the GNU General Public License
 // along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-// Code generated by ./credits.sh at Wed 29 Jul 2020 06:44:08 AM CEST. DO NOT EDIT.
+// Code generated by ./credits.sh at Mon Dec 28 02:39:43 PM CET 2020. DO NOT EDIT.
 
 package bridge
 
-const Credits = "github.com/0xAX/notificator;github.com/abiosoft/ishell;github.com/abiosoft/readline;github.com/allan-simon/go-singleinstance;github.com/andybalholm/cascadia;github.com/certifi/gocertifi;github.com/chzyer/logex;github.com/chzyer/test;github.com/cucumber/godog;github.com/docker/docker-credential-helpers;github.com/emersion/go-imap;github.com/emersion/go-imap-appendlimit;github.com/emersion/go-imap-idle;github.com/emersion/go-imap-move;github.com/emersion/go-imap-quota;github.com/emersion/go-imap-specialuse;github.com/emersion/go-imap-unselect;github.com/emersion/go-sasl;github.com/emersion/go-smtp;github.com/emersion/go-textwrapper;github.com/emersion/go-vcard;github.com/fatih/color;github.com/flynn-archive/go-shlex;github.com/getsentry/raven-go;github.com/golang/mock;github.com/google/go-cmp;github.com/gopherjs/gopherjs;github.com/go-resty/resty/v2;github.com/hashicorp/go-multierror;github.com/jameskeane/bcrypt;github.com/jaytaylor/html2text;github.com/jhillyerd/enmime;github.com/kardianos/osext;github.com/keybase/go-keychain;github.com/logrusorgru/aurora;github.com/miekg/dns;github.com/myesui/uuid;github.com/nsf/jsondiff;github.com/pkg/errors;github.com/ProtonMail/bcrypt;github.com/ProtonMail/crypto;github.com/ProtonMail/docker-credential-helpers;github.com/ProtonMail/go-appdir;github.com/ProtonMail/go-apple-mobileconfig;github.com/ProtonMail/go-autostart;github.com/ProtonMail/go-imap-id;github.com/ProtonMail/gopenpgp/v2;github.com/ProtonMail/go-smtp;github.com/ProtonMail/go-vcard;github.com/sirupsen/logrus;github.com/skratchdot/open-golang;github.com/stretchr/testify;github.com/therecipe/qt;github.com/twinj/uuid;github.com/urfave/cli;go.etcd.io/bbolt;golang.org/x/crypto;golang.org/x/net;golang.org/x/text;gopkg.in/stretchr/testify.v1;;Font Awesome 4.7.0;;Qt 5.13 by Qt group;"
+const Credits = "github.com/0xAX/notificator;github.com/abiosoft/ishell;github.com/abiosoft/readline;github.com/allan-simon/go-singleinstance;github.com/chzyer/logex;github.com/chzyer/test;github.com/cucumber/godog;github.com/docker/docker-credential-helpers;github.com/emersion/go-imap;github.com/emersion/go-imap-appendlimit;github.com/emersion/go-imap-idle;github.com/emersion/go-imap-move;github.com/emersion/go-imap-quota;github.com/emersion/go-imap-unselect;github.com/emersion/go-mbox;github.com/emersion/go-message;github.com/emersion/go-sasl;github.com/emersion/go-smtp;github.com/emersion/go-textwrapper;github.com/emersion/go-vcard;github.com/fatih/color;github.com/flynn-archive/go-shlex;github.com/getsentry/sentry-go;github.com/golang/mock;github.com/google/go-cmp;github.com/google/uuid;github.com/gopherjs/gopherjs;github.com/go-resty/resty/v2;github.com/hashicorp/go-multierror;github.com/jameskeane/bcrypt;github.com/jaytaylor/html2text;github.com/kardianos/osext;github.com/keybase/go-keychain;github.com/logrusorgru/aurora;github.com/Masterminds/semver/v3;github.com/mattn/go-runewidth;github.com/miekg/dns;github.com/myesui/uuid;github.com/nsf/jsondiff;github.com/olekukonko/tablewriter;github.com/pkg/errors;github.com/ProtonMail/bcrypt;github.com/ProtonMail/crypto;github.com/ProtonMail/docker-credential-helpers;github.com/ProtonMail/go-appdir;github.com/ProtonMail/go-apple-mobileconfig;github.com/ProtonMail/go-autostart;github.com/ProtonMail/go-imap;github.com/ProtonMail/go-imap-id;github.com/ProtonMail/gopenpgp/v2;github.com/ProtonMail/go-rfc5322;github.com/ProtonMail/go-vcard;github.com/PuerkitoBio/goquery;github.com/sirupsen/logrus;github.com/skratchdot/open-golang;github.com/ssor/bom;github.com/stretchr/testify;github.com/therecipe/qt;github.com/twinj/uuid;github.com/urfave/cli;go.etcd.io/bbolt;golang.org/x/crypto;golang.org/x/net;golang.org/x/text;gopkg.in/stretchr/testify.v1;;Font Awesome 4.7.0;;Qt 5.13 by Qt group;"

internal/bridge/release_notes.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -15,17 +15,12 @@
 // You should have received a copy of the GNU General Public License
 // along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-// Code generated by ./release-notes.sh at Wed 29 Jul 2020 07:07:28 AM CEST. DO NOT EDIT.
+// Code generated by ./release-notes.sh at 'Fri Jan 22 11:01:06 AM CET 2021'. DO NOT EDIT.
 
 package bridge
 
-const ReleaseNotes = `• Improvements to Alternative Routing: Version two of this feature is now more resilient to unstable internet connections, which results in a smoother experience using this feature. Also includes fixes to previous implementation of Alternative Routing when first starting the application or when turning it off.
+const ReleaseNotes = `
-• Email parsing improvements: Improved detection of email encodings embedded in html/xml in addition to message header; add a fallback option if encoding is not specified and decoding as UTF8 fails (ISO-8859-1) ; tweaked logic of parsing "References" header.
-• User interaction improvements: Some smaller improvements in specific cases to make the interaction with Proton Bridge clearer for the user
-• Code updates & maintenance: Migrated to GopenPGP v2, updates to GoIMAPv1, increased bbolt version to 1.3.5 and various improvements regarding extensibility and maintainability for upcoming work.
-• General stability improvements: Improvements to the behavior of the application under various unstable internet conditions.
 `
 
-const ReleaseFixedBugs = `• Fixed a slew of smaller bugs and some conditions which could cause the application to crash.
+const ReleaseFixedBugs = `• Fixed sending error caused by inconsistent use of upper and lower case in sender’s email address
-• The full changelog can be found at https://github.com/ProtonMail/proton-bridge/blob/master/Changelog.md
 `

internal/bridge/store_factory.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/bridge/types.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -32,6 +32,7 @@ type StoreFactoryConfiger interface {
 type PreferenceProvider interface {
 	Get(key string) string
 	GetBool(key string) bool
+	SetBool(key string, val bool)
 	GetInt(key string) int
 	Set(key string, value string)
 }

internal/cmd/args.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -15,16 +15,16 @@
 // You should have received a copy of the GNU General Public License
 // along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
 
-package args
+package cmd
 
 import (
 	"os"
 	"strings"
 )
 
-// FilterProcessSerialNumberFromArgs removes additional flag from MacOS. More info ProcessSerialNumber
+// filterProcessSerialNumberFromArgs removes additional flag from MacOS. More info ProcessSerialNumber
 // http://mirror.informatimago.com/next/developer.apple.com/documentation/Carbon/Reference/Process_Manager/prmref_main/data_type_5.html#//apple_ref/doc/uid/TP30000208/C001951
-func FilterProcessSerialNumberFromArgs() {
+func filterProcessSerialNumberFromArgs() {
 	tmp := os.Args[:0]
 	for _, arg := range os.Args {
 		if !strings.Contains(arg, "-psn_") {

internal/cmd/main.go

@@ -0,0 +1,96 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	"os"
+	"runtime"
+
+	"github.com/ProtonMail/proton-bridge/pkg/constants"
+	pkgSentry "github.com/ProtonMail/proton-bridge/pkg/sentry"
+	"github.com/getsentry/sentry-go"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli"
+)
+
+var (
+	log = logrus.WithField("pkg", "cmd") //nolint[gochecknoglobals]
+
+	baseFlags = []cli.Flag{ //nolint[gochecknoglobals]
+		cli.StringFlag{
+			Name:  "log-level, l",
+			Usage: "Set the log level (one of panic, fatal, error, warn, info, debug, debug-client, debug-server)"},
+		cli.BoolFlag{
+			Name:  "cli, c",
+			Usage: "Use command line interface"},
+		cli.StringFlag{
+			Name:  "version-json, g",
+			Usage: "Generate json version file"},
+		cli.BoolFlag{
+			Name:  "mem-prof, m",
+			Usage: "Generate memory profile"},
+		cli.BoolFlag{
+			Name:  "cpu-prof, p",
+			Usage: "Generate CPU profile"},
+	}
+)
+
+// Main sets up Sentry, filters out unwanted args, creates app and runs it.
+func Main(appName, usage string, extraFlags []cli.Flag, run func(*cli.Context) error) {
+	err := sentry.Init(sentry.ClientOptions{
+		Dsn:        constants.DSNSentry,
+		Release:    constants.Revision,
+		BeforeSend: pkgSentry.EnhanceSentryEvent,
+	})
+
+	sentry.ConfigureScope(func(scope *sentry.Scope) {
+		scope.SetFingerprint([]string{"{{ default }}"})
+	})
+
+	if err != nil {
+		log.WithError(err).Errorln("Can not setup sentry DSN")
+	}
+
+	filterProcessSerialNumberFromArgs()
+	filterRestartNumberFromArgs()
+
+	app := newApp(appName, usage, extraFlags, run)
+
+	logrus.SetLevel(logrus.InfoLevel)
+	log.WithField("version", constants.Version).
+		WithField("revision", constants.Revision).
+		WithField("build", constants.BuildTime).
+		WithField("runtime", runtime.GOOS).
+		WithField("args", os.Args).
+		WithField("appName", app.Name).
+		Info("Run app")
+
+	if err := app.Run(os.Args); err != nil {
+		log.Error("Program exited with error: ", err)
+	}
+}
+
+func newApp(appName, usage string, extraFlags []cli.Flag, run func(*cli.Context) error) *cli.App {
+	app := cli.NewApp()
+	app.Name = appName
+	app.Usage = usage
+	app.Version = constants.BuildVersion
+	app.Flags = append(baseFlags, extraFlags...) //nolint[gocritic]
+	app.Action = run
+	return app
+}

internal/cmd/profiles.go

@@ -0,0 +1,54 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"runtime/pprof"
+)
+
+// StartCPUProfile starts CPU pprof.
+func StartCPUProfile() {
+	f, err := os.Create("./cpu.pprof")
+	if err != nil {
+		log.Fatal("Could not create CPU profile: ", err)
+	}
+	if err := pprof.StartCPUProfile(f); err != nil {
+		log.Fatal("Could not start CPU profile: ", err)
+	}
+}
+
+// MakeMemoryProfile generates memory pprof.
+func MakeMemoryProfile() {
+	name := "./mem.pprof"
+	f, err := os.Create(name)
+	if err != nil {
+		log.Fatal("Could not create memory profile: ", err)
+	}
+	if abs, err := filepath.Abs(name); err == nil {
+		name = abs
+	}
+	log.Info("Writing memory profile to ", name)
+	runtime.GC() // get up-to-date statistics
+	if err := pprof.WriteHeapProfile(f); err != nil {
+		log.Fatal("Could not write memory profile: ", err)
+	}
+	_ = f.Close()
+}

internal/cmd/restart.go

@@ -0,0 +1,111 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strconv"
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/sentry"
+	"github.com/urfave/cli"
+)
+
+const (
+	// After how many crashes app gives up starting.
+	maxAllowedCrashes = 10
+)
+
+var (
+	// How many crashes happened so far in a row.
+	// It will be filled from args by `filterRestartNumberFromArgs`.
+	// Every call of `HandlePanic` will increase this number.
+	// Then it will be passed as argument to the next try by `RestartApp`.
+	numberOfCrashes = 0 //nolint[gochecknoglobals]
+)
+
+// filterRestartNumberFromArgs removes flag with a number how many restart we already did.
+// See restartApp how that number is used.
+func filterRestartNumberFromArgs() {
+	tmp := os.Args[:0]
+	for i, arg := range os.Args {
+		if !strings.HasPrefix(arg, "--restart_") {
+			tmp = append(tmp, arg)
+			continue
+		}
+		var err error
+		numberOfCrashes, err = strconv.Atoi(os.Args[i][10:])
+		if err != nil {
+			numberOfCrashes = maxAllowedCrashes
+		}
+	}
+	os.Args = tmp
+}
+
+// DisableRestart disables restart once `RestartApp` is called.
+func DisableRestart() {
+	numberOfCrashes = maxAllowedCrashes
+}
+
+// RestartApp starts a new instance in background.
+func RestartApp() {
+	if numberOfCrashes >= maxAllowedCrashes {
+		log.Error("Too many crashes")
+		return
+	}
+	if exeFile, err := os.Executable(); err == nil {
+		arguments := append(os.Args[1:], fmt.Sprintf("--restart_%d", numberOfCrashes))
+		cmd := exec.Command(exeFile, arguments...) //nolint[gosec]
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		cmd.Stdin = os.Stdin
+		if err := cmd.Start(); err != nil {
+			log.Error("Restart failed: ", err)
+		}
+	}
+}
+
+// PanicHandler defines HandlePanic which can be used anywhere in defer.
+type PanicHandler struct {
+	AppName string
+	Config  *config.Config
+	Err     *error // Pointer to error of cli action.
+}
+
+// HandlePanic should be called in defer to ensure restart of app after error.
+func (ph *PanicHandler) HandlePanic() {
+	sentry.SkipDuringUnwind()
+
+	r := recover()
+	if r == nil {
+		return
+	}
+
+	config.HandlePanic(ph.Config, fmt.Sprintf("Recover: %v", r))
+	frontend.HandlePanic(ph.AppName)
+
+	*ph.Err = cli.NewExitError("Panic and restart", 255)
+	numberOfCrashes++
+	log.Error("Restarting after panic")
+	RestartApp()
+	os.Exit(255)
+}

internal/cmd/version_file.go

@@ -0,0 +1,32 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import "github.com/ProtonMail/proton-bridge/internal/updates"
+
+// GenerateVersionFiles writes a JSON file with details about current build.
+// Those files are used for upgrading the app.
+func GenerateVersionFiles(updates *updates.Updates, dir string) {
+	log.Info("Generating version files")
+	for _, goos := range []string{"windows", "darwin", "linux"} {
+		log.Debug("Generating JSON for ", goos)
+		if err := updates.CreateJSONAndSign(dir, goos); err != nil {
+			log.Error(err)
+		}
+	}
+}

internal/cookies/jar.go

@@ -0,0 +1,92 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Package cookies implements a persistent cookie jar which satisfies the http.CookieJar interface.
+package cookies
+
+import (
+	"net/http"
+	"net/http/cookiejar"
+	"net/url"
+	"sync"
+
+	"github.com/sirupsen/logrus"
+)
+
+// Jar implements http.CookieJar by wrapping the standard library's cookiejar.Jar.
+// The jar uses a pantry to load cookies at startup and save cookies when set.
+type Jar struct {
+	jar    *cookiejar.Jar
+	pantry *pantry
+	locker sync.Locker
+}
+
+type GetterSetter interface {
+	Get(string) string
+	Set(string, string)
+}
+
+func NewCookieJar(gs GetterSetter) (*Jar, error) {
+	pantry := &pantry{gs: gs}
+
+	if err := pantry.discardExpiredCookies(); err != nil {
+		return nil, err
+	}
+
+	cookies, err := pantry.loadFromJSON()
+	if err != nil {
+		return nil, err
+	}
+
+	jar, err := cookiejar.New(nil)
+	if err != nil {
+		return nil, err
+	}
+
+	for rawURL, cookies := range cookies {
+		url, err := url.Parse(rawURL)
+		if err != nil {
+			continue
+		}
+
+		jar.SetCookies(url, cookies)
+	}
+
+	return &Jar{
+		jar:    jar,
+		pantry: pantry,
+		locker: &sync.Mutex{},
+	}, nil
+}
+
+func (j *Jar) SetCookies(u *url.URL, cookies []*http.Cookie) {
+	j.locker.Lock()
+	defer j.locker.Unlock()
+
+	j.jar.SetCookies(u, cookies)
+
+	if err := j.pantry.persistCookies(u.Scheme+"://"+u.Host, cookies); err != nil {
+		logrus.WithError(err).Warn("Failed to persist cookie")
+	}
+}
+
+func (j *Jar) Cookies(u *url.URL) []*http.Cookie {
+	j.locker.Lock()
+	defer j.locker.Unlock()
+
+	return j.jar.Cookies(u)
+}

internal/cookies/jar_test.go

@@ -0,0 +1,168 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cookies
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestJarGetSet(t *testing.T) {
+	ts := getTestServer(t, []testCookie{
+		{"TestName1", "TestValue1", 3600},
+		{"TestName2", "TestValue2", 3600},
+		{"TestName3", "TestValue3", 3600},
+	})
+	defer ts.Close()
+
+	client := getClientWithJar(t, make(testGetterSetter))
+
+	// Hit a server that sets some cookies.
+	setRes, err := client.Get(ts.URL + "/set")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, setRes.Body.Close())
+
+	// Hit a server that checks the cookies are there.
+	getRes, err := client.Get(ts.URL + "/get")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, getRes.Body.Close())
+}
+
+func TestJarLoad(t *testing.T) {
+	ts := getTestServer(t, []testCookie{
+		{"TestName1", "TestValue1", 3600},
+		{"TestName2", "TestValue2", 3600},
+		{"TestName3", "TestValue3", 3600},
+	})
+	defer ts.Close()
+
+	// This will be our "persistent storage" from which the cookie jar should load cookies.
+	gs := make(testGetterSetter)
+
+	// This client saves cookies to persistent storage.
+	oldClient := getClientWithJar(t, gs)
+
+	// Hit a server that sets some cookies.
+	setRes, err := oldClient.Get(ts.URL + "/set")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, setRes.Body.Close())
+
+	// This client loads cookies from persistent storage.
+	newClient := getClientWithJar(t, gs)
+
+	// Hit a server that checks the cookies are there.
+	getRes, err := newClient.Get(ts.URL + "/get")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, getRes.Body.Close())
+}
+
+func TestJarExpiry(t *testing.T) {
+	ts := getTestServer(t, []testCookie{
+		{"TestName1", "TestValue1", 3600},
+		{"TestName2", "TestValue2", 1},
+		{"TestName3", "TestValue3", 3600},
+	})
+	defer ts.Close()
+
+	// This will be our "persistent storage" from which the cookie jar should load cookies.
+	gs := make(testGetterSetter)
+
+	// This client saves cookies to persistent storage.
+	oldClient := getClientWithJar(t, gs)
+
+	// Hit a server that sets some cookies.
+	setRes, err := oldClient.Get(ts.URL + "/set")
+	if err != nil {
+		t.FailNow()
+	}
+	require.NoError(t, setRes.Body.Close())
+
+	// Wait until the second cookie expires.
+	time.Sleep(2 * time.Second)
+
+	// Load a client, which will clear out expired cookies.
+	_ = getClientWithJar(t, gs)
+
+	assert.Contains(t, gs["cookies"], "TestName1")
+	assert.NotContains(t, gs["cookies"], "TestName2")
+	assert.Contains(t, gs["cookies"], "TestName3")
+}
+
+type testCookie struct {
+	name, value string
+	maxAge      int
+}
+
+func getClientWithJar(t *testing.T, gs GetterSetter) *http.Client {
+	jar, err := NewCookieJar(gs)
+	require.NoError(t, err)
+
+	return &http.Client{Jar: jar}
+}
+
+func getTestServer(t *testing.T, wantCookies []testCookie) *httptest.Server {
+	mux := http.NewServeMux()
+
+	mux.HandleFunc("/set", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		for _, cookie := range wantCookies {
+			http.SetCookie(w, &http.Cookie{
+				Name:   cookie.name,
+				Value:  cookie.value,
+				MaxAge: cookie.maxAge,
+			})
+		}
+
+		w.WriteHeader(http.StatusOK)
+	}))
+
+	mux.HandleFunc("/get", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		require.Len(t, r.Cookies(), len(wantCookies))
+
+		for k, v := range r.Cookies() {
+			assert.Equal(t, wantCookies[k].name, v.Name)
+			assert.Equal(t, wantCookies[k].value, v.Value)
+		}
+
+		w.WriteHeader(http.StatusOK)
+	}))
+
+	return httptest.NewServer(mux)
+}
+
+type testGetterSetter map[string]string
+
+func (p testGetterSetter) Set(key, value string) {
+	p[key] = value
+}
+
+func (p testGetterSetter) Get(key string) string {
+	return p[key]
+}

internal/cookies/pantry.go

@@ -0,0 +1,100 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cookies
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/ProtonMail/proton-bridge/internal/preferences"
+)
+
+// pantry persists and loads cookies to some persistent storage location.
+type pantry struct {
+	gs GetterSetter
+}
+
+func (p *pantry) persistCookies(host string, cookies []*http.Cookie) error {
+	for _, cookie := range cookies {
+		if cookie.MaxAge > 0 {
+			cookie.Expires = time.Now().Add(time.Duration(cookie.MaxAge) * time.Second)
+		}
+	}
+
+	cookiesByHost, err := p.loadFromJSON()
+	if err != nil {
+		return err
+	}
+
+	cookiesByHost[host] = cookies
+
+	return p.saveToJSON(cookiesByHost)
+}
+
+func (p *pantry) discardExpiredCookies() error {
+	cookiesByHost, err := p.loadFromJSON()
+	if err != nil {
+		return err
+	}
+
+	for host, cookies := range cookiesByHost {
+		cookiesByHost[host] = discardExpiredCookies(cookies)
+	}
+
+	return p.saveToJSON(cookiesByHost)
+}
+
+type cookiesByHost map[string][]*http.Cookie
+
+func (p *pantry) loadFromJSON() (cookiesByHost, error) {
+	b := p.gs.Get(preferences.CookiesKey)
+
+	if b == "" {
+		return make(cookiesByHost), nil
+	}
+
+	var cookies cookiesByHost
+
+	if err := json.Unmarshal([]byte(b), &cookies); err != nil {
+		return nil, err
+	}
+
+	return cookies, nil
+}
+
+func (p *pantry) saveToJSON(cookies cookiesByHost) error {
+	b, err := json.Marshal(cookies)
+	if err != nil {
+		return err
+	}
+
+	p.gs.Set(preferences.CookiesKey, string(b))
+
+	return nil
+}
+
+func discardExpiredCookies(cookies []*http.Cookie) (validCookies []*http.Cookie) {
+	for _, cookie := range cookies {
+		if cookie.Expires.After(time.Now()) {
+			validCookies = append(validCookies, cookie)
+		}
+	}
+
+	return
+}

internal/events/events.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/autoconfig/applemail.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -43,7 +43,7 @@ func (c *appleMail) Name() string {
 	return "Apple Mail"
 }
 
-func (c *appleMail) Configure(imapPort, smtpPort int, imapSSL, smtpSSL bool, user types.BridgeUser, addressIndex int) error { //nolint[funlen]
+func (c *appleMail) Configure(imapPort, smtpPort int, imapSSL, smtpSSL bool, user types.User, addressIndex int) error { //nolint[funlen]
 	var addresses string
 	var displayName string
 

internal/frontend/autoconfig/autoconfig.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -23,7 +23,7 @@ import "github.com/ProtonMail/proton-bridge/internal/frontend/types"
 
 type AutoConfig interface {
 	Name() string
-	Configure(imapPort int, smtpPort int, imapSSl, smtpSSL bool, user types.BridgeUser, addressIndex int) error
+	Configure(imapPort int, smtpPort int, imapSSl, smtpSSL bool, user types.User, addressIndex int) error
 }
 
 var available []AutoConfig //nolint[gochecknoglobals]

internal/frontend/cli-ie/account_utils.go

@@ -0,0 +1,100 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/abiosoft/ishell"
+)
+
+// completeUsernames is a helper to complete usernames as the user types.
+func (f *frontendCLI) completeUsernames(args []string) (usernames []string) {
+	if len(args) > 1 {
+		return
+	}
+	arg := ""
+	if len(args) == 1 {
+		arg = args[0]
+	}
+	for _, user := range f.ie.GetUsers() {
+		if strings.HasPrefix(strings.ToLower(user.Username()), strings.ToLower(arg)) {
+			usernames = append(usernames, user.Username())
+		}
+	}
+	return
+}
+
+// noAccountWrapper is a decorator for functions which need any account to be properly functional.
+func (f *frontendCLI) noAccountWrapper(callback func(*ishell.Context)) func(*ishell.Context) {
+	return func(c *ishell.Context) {
+		users := f.ie.GetUsers()
+		if len(users) == 0 {
+			f.Println("No active accounts. Please add account to continue.")
+		} else {
+			callback(c)
+		}
+	}
+}
+
+func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.User {
+	user := f.getUserByIndexOrName("")
+	if user != nil {
+		return user
+	}
+
+	numberOfAccounts := len(f.ie.GetUsers())
+	indexRange := fmt.Sprintf("number between 0 and %d", numberOfAccounts-1)
+	if len(c.Args) == 0 {
+		f.Printf("Please choose %s or username.\n", indexRange)
+		return nil
+	}
+	arg := c.Args[0]
+	user = f.getUserByIndexOrName(arg)
+	if user == nil {
+		f.Printf("Wrong input '%s'. Choose %s or username.\n", bold(arg), indexRange)
+		return nil
+	}
+	return user
+}
+
+func (f *frontendCLI) getUserByIndexOrName(arg string) types.User {
+	users := f.ie.GetUsers()
+	numberOfAccounts := len(users)
+	if numberOfAccounts == 0 {
+		return nil
+	}
+	if numberOfAccounts == 1 {
+		return users[0]
+	}
+	if index, err := strconv.Atoi(arg); err == nil {
+		if index < 0 || index >= numberOfAccounts {
+			return nil
+		}
+		return users[index]
+	}
+	for _, user := range users {
+		if user.Username() == arg {
+			return user
+		}
+	}
+	return nil
+}

internal/frontend/cli-ie/accounts.go

@@ -0,0 +1,153 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) listAccounts(c *ishell.Context) {
+	spacing := "%-2d: %-20s (%-15s, %-15s)\n"
+	f.Printf(bold(strings.Replace(spacing, "d", "s", -1)), "#", "account", "status", "address mode")
+	for idx, user := range f.ie.GetUsers() {
+		connected := "disconnected"
+		if user.IsConnected() {
+			connected = "connected"
+		}
+		mode := "split"
+		if user.IsCombinedAddressMode() {
+			mode = "combined"
+		}
+		f.Printf(spacing, idx, user.Username(), connected, mode)
+	}
+	f.Println()
+}
+
+func (f *frontendCLI) loginAccount(c *ishell.Context) { // nolint[funlen]
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	loginName := ""
+	if len(c.Args) > 0 {
+		user := f.getUserByIndexOrName(c.Args[0])
+		if user != nil {
+			loginName = user.GetPrimaryAddress()
+		}
+	}
+
+	if loginName == "" {
+		loginName = f.readStringInAttempts("Username", c.ReadLine, isNotEmpty)
+		if loginName == "" {
+			return
+		}
+	} else {
+		f.Println("Username:", loginName)
+	}
+
+	password := f.readStringInAttempts("Password", c.ReadPassword, isNotEmpty)
+	if password == "" {
+		return
+	}
+
+	f.Println("Authenticating ... ")
+	client, auth, err := f.ie.Login(loginName, password)
+	if err != nil {
+		f.processAPIError(err)
+		return
+	}
+
+	if auth.HasTwoFactor() {
+		twoFactor := f.readStringInAttempts("Two factor code", c.ReadLine, isNotEmpty)
+		if twoFactor == "" {
+			return
+		}
+
+		err = client.Auth2FA(twoFactor, auth)
+		if err != nil {
+			f.processAPIError(err)
+			return
+		}
+	}
+
+	mailboxPassword := password
+	if auth.HasMailboxPassword() {
+		mailboxPassword = f.readStringInAttempts("Mailbox password", c.ReadPassword, isNotEmpty)
+	}
+	if mailboxPassword == "" {
+		return
+	}
+
+	f.Println("Adding account ...")
+	user, err := f.ie.FinishLogin(client, auth, mailboxPassword)
+	if err != nil {
+		log.WithField("username", loginName).WithError(err).Error("Login was unsuccessful")
+		f.Println("Adding account was unsuccessful:", err)
+		return
+	}
+
+	f.Printf("Account %s was added successfully.\n", bold(user.Username()))
+}
+
+func (f *frontendCLI) logoutAccount(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+	if f.yesNoQuestion("Are you sure you want to logout account " + bold(user.Username())) {
+		if err := user.Logout(); err != nil {
+			f.printAndLogError("Logging out failed: ", err)
+		}
+	}
+}
+
+func (f *frontendCLI) deleteAccount(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+	if f.yesNoQuestion("Are you sure you want to " + bold("remove account "+user.Username())) {
+		clearCache := f.yesNoQuestion("Do you want to remove cache for this account")
+		if err := f.ie.DeleteUser(user.ID(), clearCache); err != nil {
+			f.printAndLogError("Cannot delete account: ", err)
+			return
+		}
+	}
+}
+
+func (f *frontendCLI) deleteAccounts(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	if !f.yesNoQuestion("Do you really want remove all accounts") {
+		return
+	}
+	for _, user := range f.ie.GetUsers() {
+		if err := f.ie.DeleteUser(user.ID(), false); err != nil {
+			f.printAndLogError("Cannot delete account ", user.Username(), ": ", err)
+		}
+	}
+	c.Println("Keychain cleared")
+}

internal/frontend/cli-ie/frontend.go

@@ -0,0 +1,237 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Package cliie provides CLI interface of the Import-Export app.
+package cliie
+
+import (
+	"github.com/ProtonMail/proton-bridge/internal/events"
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/pkg/config"
+	"github.com/ProtonMail/proton-bridge/pkg/listener"
+
+	"github.com/abiosoft/ishell"
+	"github.com/sirupsen/logrus"
+)
+
+var (
+	log = logrus.WithField("pkg", "frontend/cli-ie") //nolint[gochecknoglobals]
+)
+
+type frontendCLI struct {
+	*ishell.Shell
+
+	config        *config.Config
+	eventListener listener.Listener
+	updates       types.Updater
+	ie            types.ImportExporter
+
+	appRestart bool
+}
+
+// New returns a new CLI frontend configured with the given options.
+func New( //nolint[funlen]
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie types.ImportExporter,
+) *frontendCLI { //nolint[golint]
+	fe := &frontendCLI{
+		Shell: ishell.New(),
+
+		config:        config,
+		eventListener: eventListener,
+		updates:       updates,
+		ie:            ie,
+
+		appRestart: false,
+	}
+
+	// Clear commands.
+	clearCmd := &ishell.Cmd{Name: "clear",
+		Help:    "remove stored accounts and preferences. (alias: cl)",
+		Aliases: []string{"cl"},
+	}
+	clearCmd.AddCmd(&ishell.Cmd{Name: "accounts",
+		Help:    "remove all accounts from keychain. (aliases: a, k, keychain)",
+		Aliases: []string{"a", "k", "keychain"},
+		Func:    fe.deleteAccounts,
+	})
+	fe.AddCmd(clearCmd)
+
+	// Check commands.
+	checkCmd := &ishell.Cmd{Name: "check", Help: "check internet connection or new version."}
+	checkCmd.AddCmd(&ishell.Cmd{Name: "updates",
+		Help:    "check for Import-Export updates. (aliases: u, v, version)",
+		Aliases: []string{"u", "version", "v"},
+		Func:    fe.checkUpdates,
+	})
+	checkCmd.AddCmd(&ishell.Cmd{Name: "internet",
+		Help:    "check internet connection. (aliases: i, conn, connection)",
+		Aliases: []string{"i", "con", "connection"},
+		Func:    fe.checkInternetConnection,
+	})
+	fe.AddCmd(checkCmd)
+
+	// Print info commands.
+	fe.AddCmd(&ishell.Cmd{Name: "log-dir",
+		Help:    "print path to directory with logs. (aliases: log, logs)",
+		Aliases: []string{"log", "logs"},
+		Func:    fe.printLogDir,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "manual",
+		Help:    "print URL with instructions. (alias: man)",
+		Aliases: []string{"man"},
+		Func:    fe.printManual,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "release-notes",
+		Help:    "print release notes. (aliases: notes, fixed-bugs, bugs, ver, version)",
+		Aliases: []string{"notes", "fixed-bugs", "bugs", "ver", "version"},
+		Func:    fe.printLocalReleaseNotes,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "credits",
+		Help: "print used resources.",
+		Func: fe.printCredits,
+	})
+
+	// Account commands.
+	fe.AddCmd(&ishell.Cmd{Name: "list",
+		Help:    "print the list of accounts. (aliases: l, ls)",
+		Func:    fe.noAccountWrapper(fe.listAccounts),
+		Aliases: []string{"l", "ls"},
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "login",
+		Help:      "login procedure to add or connect account. Optionally use index or account as parameter. (aliases: a, add, con, connect)",
+		Func:      fe.loginAccount,
+		Aliases:   []string{"add", "a", "con", "connect"},
+		Completer: fe.completeUsernames,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "logout",
+		Help:      "disconnect the account. Use index or account name as parameter. (aliases: d, disconnect)",
+		Func:      fe.noAccountWrapper(fe.logoutAccount),
+		Aliases:   []string{"d", "disconnect"},
+		Completer: fe.completeUsernames,
+	})
+	fe.AddCmd(&ishell.Cmd{Name: "delete",
+		Help:      "remove the account from keychain. Use index or account name as parameter. (aliases: del, rm, remove)",
+		Func:      fe.noAccountWrapper(fe.deleteAccount),
+		Aliases:   []string{"del", "rm", "remove"},
+		Completer: fe.completeUsernames,
+	})
+
+	// Import-Export commands.
+	importCmd := &ishell.Cmd{Name: "import",
+		Help:    "import messages. (alias: imp)",
+		Aliases: []string{"imp"},
+	}
+	importCmd.AddCmd(&ishell.Cmd{Name: "local",
+		Help:    "import local messages. (aliases: loc)",
+		Func:    fe.noAccountWrapper(fe.importLocalMessages),
+		Aliases: []string{"loc"},
+	})
+	importCmd.AddCmd(&ishell.Cmd{Name: "remote",
+		Help:    "import remote messages. (aliases: rem)",
+		Func:    fe.noAccountWrapper(fe.importRemoteMessages),
+		Aliases: []string{"rem"},
+	})
+	fe.AddCmd(importCmd)
+
+	exportCmd := &ishell.Cmd{Name: "export",
+		Help:    "export messages. (alias: exp)",
+		Aliases: []string{"exp"},
+	}
+	exportCmd.AddCmd(&ishell.Cmd{Name: "eml",
+		Help: "export messages to eml files.",
+		Func: fe.noAccountWrapper(fe.exportMessagesToEML),
+	})
+	exportCmd.AddCmd(&ishell.Cmd{Name: "mbox",
+		Help: "export messages to mbox files.",
+		Func: fe.noAccountWrapper(fe.exportMessagesToMBOX),
+	})
+	fe.AddCmd(exportCmd)
+
+	// System commands.
+	fe.AddCmd(&ishell.Cmd{Name: "restart",
+		Help: "restart the Import-Export app.",
+		Func: fe.restart,
+	})
+
+	go func() {
+		defer panicHandler.HandlePanic()
+		fe.watchEvents()
+	}()
+	fe.eventListener.RetryEmit(events.TLSCertIssue)
+	fe.eventListener.RetryEmit(events.ErrorEvent)
+	return fe
+}
+
+func (f *frontendCLI) watchEvents() {
+	errorCh := f.getEventChannel(events.ErrorEvent)
+	internetOffCh := f.getEventChannel(events.InternetOffEvent)
+	internetOnCh := f.getEventChannel(events.InternetOnEvent)
+	addressChangedLogoutCh := f.getEventChannel(events.AddressChangedLogoutEvent)
+	logoutCh := f.getEventChannel(events.LogoutEvent)
+	certIssue := f.getEventChannel(events.TLSCertIssue)
+	for {
+		select {
+		case errorDetails := <-errorCh:
+			f.Println("Import-Export failed:", errorDetails)
+		case <-internetOffCh:
+			f.notifyInternetOff()
+		case <-internetOnCh:
+			f.notifyInternetOn()
+		case address := <-addressChangedLogoutCh:
+			f.notifyLogout(address)
+		case userID := <-logoutCh:
+			user, err := f.ie.GetUser(userID)
+			if err != nil {
+				return
+			}
+			f.notifyLogout(user.Username())
+		case <-certIssue:
+			f.notifyCertIssue()
+		}
+	}
+}
+
+func (f *frontendCLI) getEventChannel(event string) <-chan string {
+	ch := make(chan string)
+	f.eventListener.Add(event, ch)
+	return ch
+}
+
+// IsAppRestarting returns whether the app is currently set to restart.
+func (f *frontendCLI) IsAppRestarting() bool {
+	return f.appRestart
+}
+
+// Loop starts the frontend loop with an interactive shell.
+func (f *frontendCLI) Loop(credentialsError error) error {
+	if credentialsError != nil {
+		f.notifyCredentialsError()
+		return credentialsError
+	}
+
+	f.Print(`
+Welcome to ProtonMail Import-Export app interactive shell
+
+WARNING: The CLI is an experimental feature and does not yet cover all functionality.
+	`)
+	f.Run()
+	return nil
+}

internal/frontend/cli-ie/importexport.go

@@ -0,0 +1,232 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"fmt"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/transfer"
+	"github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) importLocalMessages(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, false)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetLocalImporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, false, true)
+}
+
+func (f *frontendCLI) importRemoteMessages(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return
+	}
+
+	username := f.readStringInAttempts("IMAP username", c.ReadLine, isNotEmpty)
+	if username == "" {
+		return
+	}
+	password := f.readStringInAttempts("IMAP password", c.ReadPassword, isNotEmpty)
+	if password == "" {
+		return
+	}
+	host := f.readStringInAttempts("IMAP host", c.ReadLine, isNotEmpty)
+	if host == "" {
+		return
+	}
+	port := f.readStringInAttempts("IMAP port", c.ReadLine, isNotEmpty)
+	if port == "" {
+		return
+	}
+
+	t, err := f.ie.GetRemoteImporter(user.GetPrimaryAddress(), username, password, host, port)
+	f.transfer(t, err, false, true)
+}
+
+func (f *frontendCLI) exportMessagesToEML(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, true)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetEMLExporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, true, false)
+}
+
+func (f *frontendCLI) exportMessagesToMBOX(c *ishell.Context) {
+	f.ShowPrompt(false)
+	defer f.ShowPrompt(true)
+
+	user, path := f.getUserAndPath(c, true)
+	if user == nil || path == "" {
+		return
+	}
+
+	t, err := f.ie.GetMBOXExporter(user.GetPrimaryAddress(), path)
+	f.transfer(t, err, true, false)
+}
+
+func (f *frontendCLI) getUserAndPath(c *ishell.Context, createPath bool) (types.User, string) {
+	user := f.askUserByIndexOrName(c)
+	if user == nil {
+		return nil, ""
+	}
+
+	path := f.readStringInAttempts("Path of EML and MBOX files", c.ReadLine, isNotEmpty)
+	if path == "" {
+		return nil, ""
+	}
+
+	if createPath {
+		_ = os.Mkdir(path, os.ModePerm)
+	}
+
+	return user, path
+}
+
+func (f *frontendCLI) transfer(t *transfer.Transfer, err error, askSkipEncrypted bool, askGlobalMailbox bool) {
+	if err != nil {
+		f.printAndLogError("Failed to init transferrer: ", err)
+		return
+	}
+
+	if askSkipEncrypted {
+		skipEncryptedMessages := f.yesNoQuestion("Skip encrypted messages")
+		t.SetSkipEncryptedMessages(skipEncryptedMessages)
+	}
+
+	if !f.setTransferRules(t) {
+		return
+	}
+
+	if askGlobalMailbox {
+		if err := f.setTransferGlobalMailbox(t); err != nil {
+			f.printAndLogError("Failed to create global mailbox: ", err)
+			return
+		}
+	}
+
+	progress := t.Start()
+	for range progress.GetUpdateChannel() {
+		f.printTransferProgress(progress)
+	}
+	f.printTransferResult(progress)
+}
+
+func (f *frontendCLI) setTransferGlobalMailbox(t *transfer.Transfer) error {
+	labelName := fmt.Sprintf("Imported %s", time.Now().Format("Jan-02-2006 15:04"))
+
+	useGlobalLabel := f.yesNoQuestion("Use global label " + labelName)
+	if !useGlobalLabel {
+		return nil
+	}
+
+	globalMailbox, err := t.CreateTargetMailbox(transfer.Mailbox{
+		Name:        labelName,
+		Color:       pmapi.LabelColors[0],
+		IsExclusive: false,
+	})
+	if err != nil {
+		return err
+	}
+
+	t.SetGlobalMailbox(&globalMailbox)
+	return nil
+}
+
+func (f *frontendCLI) setTransferRules(t *transfer.Transfer) bool {
+	f.Println("Rules:")
+	for _, rule := range t.GetRules() {
+		if !rule.Active {
+			continue
+		}
+		targets := strings.Join(rule.TargetMailboxNames(), ", ")
+		if rule.HasTimeLimit() {
+			f.Printf(" %-30s → %s (%s - %s)\n", rule.SourceMailbox.Name, targets, rule.FromDate(), rule.ToDate())
+		} else {
+			f.Printf(" %-30s → %s\n", rule.SourceMailbox.Name, targets)
+		}
+	}
+
+	return f.yesNoQuestion("Proceed")
+}
+
+func (f *frontendCLI) printTransferProgress(progress *transfer.Progress) {
+	counts := progress.GetCounts()
+	if counts.Total != 0 {
+		f.Println(fmt.Sprintf(
+			"Progress update: %d (%d / %d) / %d, skipped: %d, failed: %d",
+			counts.Imported,
+			counts.Exported,
+			counts.Added,
+			counts.Total,
+			counts.Skipped,
+			counts.Failed,
+		))
+	}
+
+	if progress.IsPaused() {
+		f.Printf("Transfer is paused bacause %s", progress.PauseReason())
+		if !f.yesNoQuestion("Continue (y) or stop (n)") {
+			progress.Stop()
+		}
+	}
+}
+
+func (f *frontendCLI) printTransferResult(progress *transfer.Progress) {
+	err := progress.GetFatalError()
+	if err != nil {
+		f.Println("Transfer failed: " + err.Error())
+		return
+	}
+
+	statuses := progress.GetFailedMessages()
+	if len(statuses) == 0 {
+		f.Println("Transfer finished!")
+		return
+	}
+
+	f.Println("Transfer finished with errors:")
+	for _, messageStatus := range statuses {
+		f.Printf(
+			" %-17s | %-30s | %-30s\n  %s: %s\n",
+			messageStatus.Time.Format("Jan 02 2006 15:04"),
+			messageStatus.From,
+			messageStatus.Subject,
+			messageStatus.SourceID,
+			messageStatus.GetErrorMessage(),
+		)
+	}
+}

internal/frontend/cli-ie/system.go

@@ -0,0 +1,46 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) restart(c *ishell.Context) {
+	if f.yesNoQuestion("Are you sure you want to restart the Import-Export app") {
+		f.Println("Restarting the Import-Export app...")
+		f.appRestart = true
+		f.Stop()
+	}
+}
+
+func (f *frontendCLI) checkInternetConnection(c *ishell.Context) {
+	if f.ie.CheckConnection() == nil {
+		f.Println("Internet connection is available.")
+	} else {
+		f.Println("Can not contact the server, please check your internet connection.")
+	}
+}
+
+func (f *frontendCLI) printLogDir(c *ishell.Context) {
+	f.Println("Log files are stored in\n\n ", f.config.GetLogDir())
+}
+
+func (f *frontendCLI) printManual(c *ishell.Context) {
+	f.Println("More instructions about the Import-Export app can be found at\n\n  https://protonmail.com/support/categories/import-export/")
+}

internal/frontend/cli-ie/updates.go

@@ -0,0 +1,65 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
+	"github.com/abiosoft/ishell"
+)
+
+func (f *frontendCLI) checkUpdates(c *ishell.Context) {
+	isUpToDate, latestVersionInfo, err := f.updates.CheckIsUpToDate()
+	if err != nil {
+		f.printAndLogError("Cannot retrieve version info: ", err)
+		f.checkInternetConnection(c)
+		return
+	}
+	if isUpToDate {
+		f.Println("Your version is up to date.")
+	} else {
+		f.notifyNeedUpgrade()
+		f.Println("")
+		f.printReleaseNotes(latestVersionInfo)
+	}
+}
+
+func (f *frontendCLI) printLocalReleaseNotes(c *ishell.Context) {
+	localVersion := f.updates.GetLocalVersion()
+	f.printReleaseNotes(localVersion)
+}
+
+func (f *frontendCLI) printReleaseNotes(versionInfo updates.VersionInfo) {
+	f.Println(bold("ProtonMail Import-Export app "+versionInfo.Version), "\n")
+	if versionInfo.ReleaseNotes != "" {
+		f.Println(bold("Release Notes"))
+		f.Println(versionInfo.ReleaseNotes)
+	}
+	if versionInfo.ReleaseFixedBugs != "" {
+		f.Println(bold("Fixed bugs"))
+		f.Println(versionInfo.ReleaseFixedBugs)
+	}
+}
+
+func (f *frontendCLI) printCredits(c *ishell.Context) {
+	for _, pkg := range strings.Split(importexport.Credits, ";") {
+		f.Println(pkg)
+	}
+}

internal/frontend/cli-ie/utils.go

@@ -0,0 +1,123 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cliie
+
+import (
+	"strings"
+
+	pmapi "github.com/ProtonMail/proton-bridge/pkg/pmapi"
+	"github.com/fatih/color"
+)
+
+const (
+	maxInputRepeat = 2
+)
+
+var (
+	bold = color.New(color.Bold).SprintFunc() //nolint[gochecknoglobals]
+)
+
+func isNotEmpty(val string) bool {
+	return val != ""
+}
+
+func (f *frontendCLI) yesNoQuestion(question string) bool {
+	f.Print(question, "? yes/"+bold("no")+": ")
+	yes := "yes"
+	answer := strings.ToLower(f.ReadLine())
+	for i := 0; i < len(answer); i++ {
+		if i >= len(yes) || answer[i] != yes[i] {
+			return false // Everything else is false.
+		}
+	}
+	return len(answer) > 0 // Empty is false.
+}
+
+func (f *frontendCLI) readStringInAttempts(title string, readFunc func() string, isOK func(string) bool) (value string) {
+	f.Printf("%s: ", title)
+	value = readFunc()
+	title = strings.ToLower(string(title[0])) + title[1:]
+	for i := 0; !isOK(value); i++ {
+		if i >= maxInputRepeat {
+			f.Println("Too many attempts")
+			return ""
+		}
+		f.Printf("Please fill %s: ", title)
+		value = readFunc()
+	}
+	return
+}
+
+func (f *frontendCLI) printAndLogError(args ...interface{}) {
+	log.Error(args...)
+	f.Println(args...)
+}
+
+func (f *frontendCLI) processAPIError(err error) {
+	log.Warn("API error: ", err)
+	switch err {
+	case pmapi.ErrAPINotReachable:
+		f.notifyInternetOff()
+	case pmapi.ErrUpgradeApplication:
+		f.notifyNeedUpgrade()
+	default:
+		f.Println("Server error:", err.Error())
+	}
+}
+
+func (f *frontendCLI) notifyInternetOff() {
+	f.Println("Internet connection is not available.")
+}
+
+func (f *frontendCLI) notifyInternetOn() {
+	f.Println("Internet connection is available again.")
+}
+
+func (f *frontendCLI) notifyLogout(address string) {
+	f.Printf("Account %s is disconnected. Login to continue using this account with email client.", address)
+}
+
+func (f *frontendCLI) notifyNeedUpgrade() {
+	f.Println("Please download and install the newest version of application from", f.updates.GetDownloadLink())
+}
+
+func (f *frontendCLI) notifyCredentialsError() {
+	// Print in 80-column width.
+	f.Println("ProtonMail Import-Export app is not able to detect a supported password manager")
+	f.Println("(pass, gnome-keyring). Please install and set up a supported password manager")
+	f.Println("and restart the application.")
+}
+
+func (f *frontendCLI) notifyCertIssue() {
+	// Print in 80-column width.
+	f.Println(`Connection security error: Your network connection to Proton services may
+be insecure.
+
+Description:
+ProtonMail Import-Export was not able to establish a secure connection to Proton
+servers due to a TLS certificate error. This means your connection may
+potentially be insecure and susceptible to monitoring by third parties.
+
+Recommendation:
+* If you trust your network operator, you can continue to use ProtonMail
+  as usual.
+* If you don't trust your network operator, reconnect to ProtonMail over a VPN
+  (such as ProtonVPN) which encrypts your Internet connection, or use
+  a different network to access ProtonMail.
+`)
+}

internal/frontend/cli/account_utils.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -55,7 +55,7 @@ func (f *frontendCLI) noAccountWrapper(callback func(*ishell.Context)) func(*ish
 	}
 }
 
-func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.BridgeUser {
+func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.User {
 	user := f.getUserByIndexOrName("")
 	if user != nil {
 		return user
@@ -76,7 +76,7 @@ func (f *frontendCLI) askUserByIndexOrName(c *ishell.Context) types.BridgeUser {
 	return user
 }
 
-func (f *frontendCLI) getUserByIndexOrName(arg string) types.BridgeUser {
+func (f *frontendCLI) getUserByIndexOrName(arg string) types.User {
 	users := f.bridge.GetUsers()
 	numberOfAccounts := len(users)
 	if numberOfAccounts == 0 {

internal/frontend/cli/accounts.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -63,7 +63,7 @@ func (f *frontendCLI) showAccountInfo(c *ishell.Context) {
 	}
 }
 
-func (f *frontendCLI) showAccountAddressInfo(user types.BridgeUser, address string) {
+func (f *frontendCLI) showAccountAddressInfo(user types.User, address string) {
 	smtpSecurity := "STARTTLS"
 	if f.preferences.GetBool(preferences.SMTPSSLKey) {
 		smtpSecurity = "SSL"
@@ -77,7 +77,7 @@ func (f *frontendCLI) showAccountAddressInfo(user types.BridgeUser, address stri
 		"STARTTLS",
 	)
 	f.Println("")
-	f.Printf("SMTP Settings\nAddress:   %s\nIMAP port: %d\nUsername:  %s\nPassword:  %s\nSecurity:  %s\n",
+	f.Printf("SMTP Settings\nAddress:   %s\nSMTP port: %d\nUsername:  %s\nPassword:  %s\nSecurity:  %s\n",
 		bridge.Host,
 		f.preferences.GetInt(preferences.SMTPPortKey),
 		address,
@@ -126,7 +126,7 @@ func (f *frontendCLI) loginAccount(c *ishell.Context) { // nolint[funlen]
 			return
 		}
 
-		_, err = client.Auth2FA(twoFactor, auth)
+		err = client.Auth2FA(twoFactor, auth)
 		if err != nil {
 			f.processAPIError(err)
 			return

internal/frontend/cli/frontend.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -21,7 +21,6 @@ package cli
 import (
 	"github.com/ProtonMail/proton-bridge/internal/events"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
-	"github.com/ProtonMail/proton-bridge/internal/preferences"
 	"github.com/ProtonMail/proton-bridge/pkg/config"
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 
@@ -77,7 +76,7 @@ func New( //nolint[funlen]
 		Func:    fe.deleteCache,
 	})
 	clearCmd.AddCmd(&ishell.Cmd{Name: "accounts",
-		Help:    "remove all accounts from keychain. (aliases: k, keychain)",
+		Help:    "remove all accounts from keychain. (aliases: a, k, keychain)",
 		Aliases: []string{"a", "k", "keychain"},
 		Func:    fe.deleteAccounts,
 	})
@@ -241,8 +240,6 @@ func (f *frontendCLI) Loop(credentialsError error) error {
 		return credentialsError
 	}
 
-	f.preferences.SetBool(preferences.FirstStartKey, false)
-
 	f.Print(`
             Welcome to ProtonMail Bridge interactive shell
                               ___....___

internal/frontend/cli/system.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -43,7 +43,7 @@ func (f *frontendCLI) checkInternetConnection(c *ishell.Context) {
 	if f.bridge.CheckConnection() == nil {
 		f.Println("Internet connection is available.")
 	} else {
-		f.Println("Can not contact server please check you internet connection.")
+		f.Println("Can not contact the server, please check your internet connection.")
 	}
 }
 

internal/frontend/cli/updates.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -21,12 +21,12 @@ import (
 	"strings"
 
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
-	"github.com/ProtonMail/proton-bridge/pkg/updates"
+	"github.com/ProtonMail/proton-bridge/internal/updates"
 	"github.com/abiosoft/ishell"
 )
 
 func (f *frontendCLI) checkUpdates(c *ishell.Context) {
-	isUpToDate, latestVersionInfo, err := f.updates.CheckIsBridgeUpToDate()
+	isUpToDate, latestVersionInfo, err := f.updates.CheckIsUpToDate()
 	if err != nil {
 		f.printAndLogError("Cannot retrieve version info: ", err)
 		f.checkInternetConnection(c)

internal/frontend/cli/utils.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/frontend.go

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -22,8 +22,11 @@ import (
 	"github.com/0xAX/notificator"
 	"github.com/ProtonMail/proton-bridge/internal/bridge"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/cli"
+	cliie "github.com/ProtonMail/proton-bridge/internal/frontend/cli-ie"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/qt"
+	qtie "github.com/ProtonMail/proton-bridge/internal/frontend/qt-ie"
 	"github.com/ProtonMail/proton-bridge/internal/frontend/types"
+	"github.com/ProtonMail/proton-bridge/internal/importexport"
 	"github.com/ProtonMail/proton-bridge/pkg/config"
 	"github.com/ProtonMail/proton-bridge/pkg/listener"
 	"github.com/sirupsen/logrus"
@@ -40,12 +43,12 @@ type Frontend interface {
 }
 
 // HandlePanic handles panics which occur for users with GUI.
-func HandlePanic() {
+func HandlePanic(appName string) {
 	notify := notificator.New(notificator.Options{
 		DefaultIcon: "../frontend/ui/icon/icon.png",
-		AppName:     "ProtonMail Bridge",
+		AppName:     appName,
 	})
-	_ = notify.Push("Fatal Error", "The ProtonMail Bridge has encountered a fatal error. ", "/frontend/icon/icon.png", notificator.UR_CRITICAL)
+	_ = notify.Push("Fatal Error", "The "+appName+" has encountered a fatal error. ", "/frontend/icon/icon.png", notificator.UR_CRITICAL)
 }
 
 // New returns initialized frontend based on `frontendType`, which can be `cli` or `qt`.
@@ -86,3 +89,36 @@ func new(
 		return qt.New(version, buildVersion, showWindowOnStart, panicHandler, config, preferences, eventListener, updates, bridge, noEncConfirmator)
 	}
 }
+
+// NewImportExport returns initialized frontend based on `frontendType`, which can be `cli` or `qt`.
+func NewImportExport(
+	version,
+	buildVersion,
+	frontendType string,
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie *importexport.ImportExport,
+) Frontend {
+	ieWrap := types.NewImportExportWrap(ie)
+	return newImportExport(version, buildVersion, frontendType, panicHandler, config, eventListener, updates, ieWrap)
+}
+
+func newImportExport(
+	version,
+	buildVersion,
+	frontendType string,
+	panicHandler types.PanicHandler,
+	config *config.Config,
+	eventListener listener.Listener,
+	updates types.Updater,
+	ie types.ImportExporter,
+) Frontend {
+	switch frontendType {
+	case "cli":
+		return cliie.New(panicHandler, config, eventListener, updates, ie)
+	default:
+		return qtie.New(version, buildVersion, panicHandler, config, eventListener, updates, ie)
+	}
+}

internal/frontend/qml/BridgeUI/AccountDelegate.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/BubbleMenu.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/Credits.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/DialogFirstStart.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/DialogPortChange.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/DialogTLSCertInfo.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/DialogYesNo.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/HelpView.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -102,7 +102,7 @@ Item {
             Row {
                 anchors.left : parent.left
 
-                Rectangle { height: Style.dialog.spacing; width: (wrapper.width- credits.width - release.width - sepaCreditsRelease.width)/2; color: "transparent"}
+                Rectangle { height: Style.dialog.spacing; width: (wrapper.width - credits.width - licenseFile.width - release.width - sepaCreditsRelease.width)/2; color: "transparent"}
 
                 ClickIconText {
                     id:credits
@@ -114,6 +114,20 @@ Item {
                     onClicked     : winMain.dialogCredits.show()
                 }
 
+                Rectangle {id: sepaLicenseFile ; height: Style.dialog.spacing; width: Style.main.dummy; color: "transparent"}
+
+                ClickIconText {
+                    id:licenseFile
+                    iconText      : ""
+                    text          : qsTr("License", "link to click on to view license file")
+                    textColor     : Style.main.textDisabled
+                    fontSize      : Style.main.fontSize
+                    textUnderline : true
+                    onClicked     : {
+                        go.openLicenseFile()
+                    }
+                }
+
                 Rectangle {id: sepaCreditsRelease ; height: Style.dialog.spacing; width: Style.main.dummy; color: "transparent"}
 
                 ClickIconText {

internal/frontend/qml/BridgeUI/InfoWindow.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/MainWindow.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -354,7 +354,7 @@ Window {
                 } else {
                     return qsTr('A new version of Bridge is available.<br>
                     Check <a href="%1">release notes</a> to learn what is new in %2.<br>
-                    You can continue with the update or download and install new version manually from<br><br>
+                    You can continue with the update or download and install the new version manually from<br><br>
                     <a href="%3">%3</a>',
                     "Message for update in Win/Mac").arg("releaseNotes").arg(go.newversion).arg(go.landingPage)
                 }

internal/frontend/qml/BridgeUI/ManualWindow.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/OutgoingNoEncPopup.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -84,7 +84,7 @@ Window {
             anchors.horizontalCenter: parent.horizontalCenter
 
             ButtonRounded {
-                id: cancel
+                id: sendAnyway
                 onClicked : root.hide(true)
                 height: Style.main.fontSize*2
                 //width: Style.dialog.widthButton*1.3
@@ -93,7 +93,7 @@ Window {
             }
 
             ButtonRounded {
-                id: sendAnyway
+                id: cancel
                 onClicked : root.hide(false)
                 height: Style.main.fontSize*2
                 //width: Style.dialog.widthButton*1.3

internal/frontend/qml/BridgeUI/SettingsView.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -48,6 +48,7 @@ Item {
                     text : qsTr("Clear", "clickable link next to clear cache button in settings")
                     color: Style.main.text
                     font {
+                        family : cacheClear.font.family // use default font, not font-awesome
                         pointSize : Style.settings.fontSize * Style.pt
                         underline : true
                     }
@@ -66,6 +67,7 @@ Item {
                     text : qsTr("Clear", "clickable link next to clear keychain button in settings")
                     color: Style.main.text
                     font {
+                        family : cacheKeychain.font.family // use default font, not font-awesome
                         pointSize : Style.settings.fontSize * Style.pt
                         underline : true
                     }
@@ -125,6 +127,7 @@ Item {
                     text : qsTr("Change", "clickable link next to change ports button in settings")
                     color: Style.main.text
                     font {
+                        family : changePort.font.family // use default font, not font-awesome
                         pointSize : Style.settings.fontSize * Style.pt
                         underline : true
                     }

internal/frontend/qml/BridgeUI/StatusFooter.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/BridgeUI/VersionInfo.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //

internal/frontend/qml/Gui.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //
@@ -237,6 +237,7 @@ Item {
             winMain.tlsBarState="notOK"
         }
 
+
     }
 
     Timer {

internal/frontend/qml/GuiIE.qml

@@ -0,0 +1,422 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is main qml file
+
+import QtQuick 2.8
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+// All imports from dynamic must be loaded before
+import QtQuick.Window 2.2
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+
+Item {
+    id: gui
+    property alias winMain: winMain
+    property bool isFirstWindow: true
+    property int warningFlags: 0
+
+    property var locale    : Qt.locale("en_US")
+    property date netBday  : new Date("1989-03-13T00:00:00")
+    property var allYears  : getYearList(1970,(new Date()).getFullYear())
+    property var allMonths : getMonthList(1,12)
+    property var allDays   : getDayList(1,31)
+
+    property var enums : JSON.parse('{"pathOK":1,"pathEmptyPath":2,"pathWrongPath":4,"pathNotADir":8,"pathWrongPermissions":16,"pathDirEmpty":32,"errUnknownError":0,"errEventAPILogout":1,"errUpdateAPI":2,"errUpdateJSON":3,"errUserAuth":4,"errQApplication":18,"errEmailExportFailed":6,"errEmailExportMissing":7,"errNothingToImport":8,"errEmailImportFailed":12,"errDraftImportFailed":13,"errDraftLabelFailed":14,"errEncryptMessageAttachment":15,"errEncryptMessage":16,"errNoInternetWhileImport":17,"errUnlockUser":5,"errSourceMessageNotSelected":19,"errCannotParseMail":5000,"errWrongLoginOrPassword":5001,"errWrongServerPathOrPort":5002,"errWrongAuthMethod":5003,"errIMAPFetchFailed":5004,"errLocalSourceLoadFailed":1000,"errPMLoadFailed":1001,"errRemoteSourceLoadFailed":1002,"errLoadAccountList":1005,"errExit":1006,"errRetry":1007,"errAsk":1008,"errImportFailed":1009,"errCreateLabelFailed":1010,"errCreateFolderFailed":1011,"errUpdateLabelFailed":1012,"errUpdateFolderFailed":1013,"errFillFolderName":1014,"errSelectFolderColor":1015,"errNoInternet":1016,"folderTypeSystem":"system","folderTypeLabel":"label","folderTypeFolder":"folder","folderTypeExternal":"external","progressInit":"init","progressLooping":"looping","statusNoInternet":"noInternet","statusCheckingInternet":"internetCheck","statusNewVersionAvailable":"oldVersion","statusUpToDate":"upToDate","statusForceUpdate":"forceupdate"}')
+
+    IEStyle{}
+
+    MainWindow {
+        id: winMain
+
+        visible : true
+        Component.onCompleted: {
+            winMain.showAndRise()
+        }
+    }
+
+    BugReportWindow {
+        id:bugreportWin
+        clientVersion.visible: false
+        onPrefill : {
+            userAddress.text=""
+            if (accountsModel.count>0) {
+                var addressList = accountsModel.get(0).aliases.split(";")
+                if (addressList.length>0) {
+                    userAddress.text = addressList[0]
+                }
+            }
+        }
+    }
+
+    // Signals from Go
+    Connections {
+        target: go
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+        onProcessFinished :  {
+            winMain.dialogAddUser.hide()
+            winMain.dialogGlobal.hide()
+        }
+        onOpenManual : Qt.openUrlExternally("https://protonmail.com/support/categories/import-export/")
+
+        onNotifyBubble : {
+            //go.highlightSystray()
+            winMain.bubleNote.text = message
+            winMain.bubleNote.place(tabIndex)
+            winMain.bubleNote.show()
+            winMain.showAndRise()
+        }
+        onBubbleClosed : {
+            if (winMain.updateState=="uptodate") {
+                //go.normalSystray()
+            }
+        }
+
+        onSetConnectionStatus: {
+            go.isConnectionOK = isAvailable
+            if (go.isConnectionOK) {
+                if( winMain.updateState==gui.enums.statusNoInternet) {
+                    go.setUpdateState(gui.enums.statusUpToDate)
+                }
+            } else {
+                go.setUpdateState(gui.enums.statusNoInternet)
+            }
+        }
+
+        onRunCheckVersion : {
+            go.setUpdateState(gui.enums.statusUpToDate)
+            winMain.dialogGlobal.state=gui.enums.statusCheckingInternet
+            winMain.dialogGlobal.show()
+            go.isNewVersionAvailable(showMessage)
+        }
+
+        onSetUpdateState : {
+            // once app is outdated prevent from state change
+            if (winMain.updateState != gui.enums.statusForceUpdate) {
+                winMain.updateState = updateState
+            }
+        }
+
+        onSetAddAccountWarning : winMain.dialogAddUser.setWarning(message, 0)
+
+        onNotifyVersionIsTheLatest : {
+            winMain.popupMessage.show(
+                qsTr("You have the latest version!", "todo")
+            )
+        }
+
+        onNotifyError : {
+            var sep = go.errorDescription.indexOf("\n") < 0 ? go.errorDescription.length : go.errorDescription.indexOf("\n")
+            var name = go.errorDescription.slice(0, sep)
+            var errorMessage = go.errorDescription.slice(sep)
+            switch (errCode) {
+                case gui.enums.errPMLoadFailed :
+                winMain.popupMessage.show ( qsTr ( "Loading ProtonMail folders and labels was not successful."  , "Error message" )  )
+                winMain.dialogExport.hide()
+                break
+                case gui.enums.errLocalSourceLoadFailed  :
+                winMain.popupMessage.show(qsTr(
+                    "Loading local folder structure was not successful. "+
+                    "Folder does not contain valid MBOX or EML file.",
+                    "Error message when can not find correct files in folder."
+                ))
+                winMain.dialogImport.hide()
+                break
+                case gui.enums.errRemoteSourceLoadFailed : 
+                winMain.popupMessage.show ( qsTr ( "Loading remote source structure was not successful."        , "Error message" )  )
+                winMain.dialogImport.hide()
+                break
+                case gui.enums.errWrongServerPathOrPort      :
+                winMain.popupMessage.show ( qsTr ( "Cannot contact server - incorrect server address and port." , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break
+                case gui.enums.errWrongLoginOrPassword   :
+                winMain.popupMessage.show ( qsTr ( "Cannot authenticate - Incorrect email or password."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break ;
+                case gui.enums.errWrongAuthMethod   :
+                winMain.popupMessage.show ( qsTr ( "Cannot authenticate - Please use secured authentication method."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break ;
+
+
+                case gui.enums.errFillFolderName: 
+                winMain.popupMessage.show(qsTr (
+                    "Please fill the name.",
+                    "Error message when user did not fill the name of folder or label"
+                ))
+                break
+                case gui.enums.errCreateLabelFailed: 
+                winMain.popupMessage.show(qsTr(
+                    "Cannot create label with name \"%1\"\n%2",
+                    "Error message when it is not possible to create new label, arg1 folder name, arg2 error reason"
+                ).arg(name).arg(errorMessage))
+                break
+                case gui.enums.errCreateFolderFailed: 
+                winMain.popupMessage.show(qsTr(
+                    "Cannot create folder with name \"%1\"\n%2",
+                    "Error message when it is not possible to create new folder, arg1 folder name, arg2 error reason"
+                ).arg(name).arg(errorMessage))
+                break
+
+                case gui.enums.errNothingToImport:
+                winMain.popupMessage.show ( qsTr ( "No emails left to import after date range applied. Please, change the date range to continue."     , "Error message" )  )
+                winMain.dialogImport.decrementCurrentIndex()
+                break
+
+                case gui.enums.errNoInternetWhileImport:
+                case gui.enums.errNoInternet:
+                go.setConnectionStatus(false)
+                winMain.popupMessage.show ( go.canNotReachAPI )
+                break
+
+                case gui.enums.errPMAPIMessageTooLarge:
+                case gui.enums.errIMAPFetchFailed:
+                case gui.enums.errEmailImportFailed :
+                case gui.enums.errDraftImportFailed :
+                case gui.enums.errDraftLabelFailed :
+                case gui.enums.errEncryptMessageAttachment:
+                case gui.enums.errEncryptMessage:
+                //winMain.dialogImport.ask_retry_skip_cancel(name, errorMessage)
+                console.log("Import error", errCode, go.errorDescription)
+                winMain.popupMessage.show(qsTr("Error during import: \n%1\n please see log files for more details.", "message of generic error").arg(go.errorDescription))
+                winMain.dialogImport.hide()
+                break;
+
+                case gui.enums.errUnknownError  : default:
+                console.log("Unknown Error", errCode, go.errorDescription)
+                winMain.popupMessage.show(qsTr("The program encounter an unknown error \n%1\n please see log files for more details.", "message of generic error").arg(go.errorDescription))
+                winMain.dialogExport.hide()
+                winMain.dialogImport.hide()
+                winMain.dialogAddUser.hide()
+                winMain.dialogGlobal.hide()
+            }
+        }
+
+        onNotifyUpdate : {
+            go.setUpdateState("forceUpdate")
+            if (!winMain.dialogUpdate.visible) {
+                gui.openMainWindow(true)
+                go.runCheckVersion(false)
+                winMain.dialogUpdate.show()
+            }
+        }
+
+        onNotifyLogout : {
+            go.notifyBubble(0, qsTr("Account %1 has been disconnected. Please log in to continue to use the Import-Export app with this account.").arg(accname) )
+        }
+
+        onNotifyAddressChanged : {
+            go.notifyBubble(0, qsTr("The address list has been changed for account %1. You may need to reconfigure the settings in your email client.").arg(accname) )
+        }
+
+        onNotifyAddressChangedLogout : {
+            go.notifyBubble(0, qsTr("The address list has been changed for account %1. You have to reconfigure the settings in your email client.").arg(accname) )
+        }
+
+
+        onNotifyKeychainRebuild : {
+            go.notifyBubble(1, qsTr(
+                "Your MacOS keychain is probably corrupted. Please consult the instructions in our <a href=\"https://protonmail.com/bridge/faq#c15\">FAQ</a>.",
+                "notification message"
+            ))
+        }
+
+        onNotifyHasNoKeychain : {
+            gui.winMain.dialogGlobal.state="noKeychain"
+            gui.winMain.dialogGlobal.show()
+        }
+
+
+        onExportStructureLoadFinished: {
+            if (okay) winMain.dialogExport.okay()
+            else winMain.dialogExport.cancel()
+        }
+        onImportStructuresLoadFinished: {
+            if (okay) winMain.dialogImport.okay()
+            else winMain.dialogImport.cancel()
+        }
+
+        onSimpleErrorHappen: {
+            if (winMain.dialogImport.visible == true) {
+                winMain.dialogImport.hide()
+            }
+            if (winMain.dialogExport.visible == true) {
+                winMain.dialogExport.hide()
+            }
+        }
+
+        onUpdateFinished : {
+            winMain.dialogUpdate.finished(hasError)
+        }
+    }
+
+    function folderIcon(folderName, folderType) { // translations
+        switch (folderName.toLowerCase()) {
+            case "inbox"   : return Style.fa.inbox
+            case "sent"    : return Style.fa.send
+            case "spam"    :
+            case "junk"    : return Style.fa.ban
+            case "draft"   : return Style.fa.file_o
+            case "starred" : return Style.fa.star_o
+            case "trash"   : return Style.fa.trash_o
+            case "archive" : return Style.fa.archive
+            default: return folderType == gui.enums.folderTypeLabel ? Style.fa.tag : Style.fa.folder_open
+        }
+        return Style.fa.sticky_note_o
+    }
+
+    function folderTypeTitle(folderType) { // translations
+        if (folderType==gui.enums.folderTypeSystem ) return ""
+        if (folderType==gui.enums.folderTypeLabel  ) return qsTr("Labels"  , "todo")
+        if (folderType==gui.enums.folderTypeFolder ) return qsTr("Folders" , "todo")
+        return "Undef"
+    }
+
+    function isFolderEmpty() {
+        return "true"
+    }
+
+    function getUnixTime(dateString) {
+        var d = new Date(dateString)
+        var n = d.getTime()
+        if (n != n) return -1
+        return n
+    }
+
+    function getYearList(minY,maxY) {
+        var years  = new Array()
+        for (var i=0; i<=maxY-minY;i++) {
+            years[i] = (maxY-i).toString()
+        }
+        //console.log("getYearList:", years)
+        return years
+    }
+
+    function getMonthList(minM,maxM) {
+        var months = new Array()
+        for (var i=0; i<=maxM-minM;i++) {
+            var iMonth = new Date(1989,(i+minM-1),13)
+            months[i] = iMonth.toLocaleString(gui.locale, "MMM")
+        }
+        //console.log("getMonthList:", months[0], months)
+        return months
+    }
+
+    function getDayList(minD,maxD) {
+        var days = new Array()
+        for (var i=0; i<=maxD-minD;i++) {
+            days[i] = gui.prependZeros(i+minD,2)
+        }
+        return days
+    }
+
+    function prependZeros(num,desiredLength) {
+        var s = num+""
+        while (s.length < desiredLength) s="0"+s
+        return s
+    }
+
+    function daysInMonth(year,month) {
+        if (typeof(year) !== 'number') {
+            year = parseInt(year)
+        }
+        if (typeof(month) !== 'number') {
+            month = Date.fromLocaleDateString( gui.locale, "1970-"+month+"-10", "yyyy-MMM-dd").getMonth()+1
+        }
+        var maxDays = (new Date(year,month,0)).getDate()
+        if (isNaN(maxDays)) maxDays = 0
+        //console.log(" daysInMonth", year, month, maxDays)
+        return maxDays
+    }
+
+    function niceDateTime() {
+        var stamp = new Date()
+        var nice = getMonthList(stamp.getMonth()+1, stamp.getMonth()+1)[0]
+        nice += "-" + getDayList(stamp.getDate(), stamp.getDate())[0]
+        nice += "-" + getYearList(stamp.getFullYear(), stamp.getFullYear())[0]
+        nice += " " + gui.prependZeros(stamp.getHours(),2)
+        nice += ":" + gui.prependZeros(stamp.getMinutes(),2)
+        return nice
+    }
+
+    /*
+     // Debug
+     Connections {
+         target: structureExternal
+
+         onDataChanged: {
+             console.log("external data changed")
+         }
+     }
+
+     // Debug
+     Connections {
+         target: structurePM
+
+         onSelectedLabelsChanged: console.log("PM sel labels:", structurePM.selectedLabels)
+         onSelectedFoldersChanged: console.log("PM sel folders:", structurePM.selectedFolders)
+         onDataChanged: {
+             console.log("PM data changed")
+         }
+     }
+     */
+
+    Timer {
+        id: checkVersionTimer
+        repeat : true
+        triggeredOnStart: false
+        interval : Style.main.verCheckRepeatTime
+        onTriggered : go.runCheckVersion(false)
+    }
+
+    property string  areYouSureYouWantToQuit : qsTr("There are incomplete processes - some items are not yet transferred. Do you really want to stop and quit?")
+    // On start
+    Component.onCompleted : {
+        // set spell messages
+        go.wrongCredentials       = qsTr("Incorrect username or password."                               , "notification", -1)
+        go.wrongMailboxPassword   = qsTr("Incorrect mailbox password."                                   , "notification", -1)
+        go.canNotReachAPI         = qsTr("Cannot contact server, please check your internet connection." , "notification", -1)
+        go.versionCheckFailed     = qsTr("Version check was unsuccessful. Please try again later."       , "notification", -1)
+        go.credentialsNotRemoved  = qsTr("Credentials could not be removed."                             , "notification", -1)
+        go.bugNotSent             = qsTr("Unable to submit bug report."                                  , "notification", -1)
+        go.bugReportSent          = qsTr("Bug report successfully sent."                                 , "notification", -1)
+
+        go.runCheckVersion(false)
+        checkVersionTimer.start()
+
+        gui.allMonths = getMonthList(1,12)
+        gui.allMonthsChanged()
+    }
+}

internal/frontend/qml/ImportExportUI/AccountDelegate.qml

@@ -0,0 +1,432 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+// NOTE: Keep the Column so the height and width is inherited from content
+Column {
+    id: root
+    state: status
+    anchors.left: parent.left
+
+    property real row_width: 50 * Style.px
+    property int row_height: Style.accounts.heightAccount
+    property var listalias : aliases.split(";")
+    property int iAccount: index
+
+    property real spacingLastButtons: (row_width - exportAccount.anchors.leftMargin -Style.main.rightMargin - exportAccount.width - logoutAccount.width - deleteAccount.width)/2
+
+    Accessible.role: go.goos=="windows" ? Accessible.Grouping : Accessible.Row
+    Accessible.name: qsTr("Account %1, status %2", "Accessible text describing account row with arguments: account name and status (connected/disconnected), resp.").arg(account).arg(statusMark.text)
+    Accessible.description: Accessible.name
+    Accessible.ignored: !enabled || !visible
+
+    // Main row
+    Rectangle {
+        id: mainaccRow
+        anchors.left: parent.left
+        width  : row_width
+        height : row_height
+        state: { return isExpanded ? "expanded" : "collapsed" }
+        color: Style.main.background
+
+        property string actionName : (
+            isExpanded ?
+            qsTr("Collapse row for account %2", "Accessible text of button showing additional configuration of account") : 
+            qsTr("Expand row for account %2", "Accessible text of button hiding additional configuration of account")
+        ).  arg(account)
+
+
+        // override by other buttons
+        MouseArea {
+            id: mouseArea
+            anchors.fill: parent
+            onClicked : {
+                if (root.state=="connected") {
+                    mainaccRow.toggle_accountSettings()
+                }
+            }
+            cursorShape : root.state == "connected" ? Qt.PointingHandCursor : Qt.ArrowCursor
+            hoverEnabled: true
+            onEntered: {
+                if (mainaccRow.state=="collapsed") {
+                    mainaccRow.color = Qt.lighter(Style.main.background,1.1)
+                }
+            }
+            onExited: {
+                if (mainaccRow.state=="collapsed") {
+                    mainaccRow.color = Style.main.background
+                }
+            }
+        }
+
+        // toggle down/up icon
+        Text {
+            id: toggleIcon
+            anchors {
+                left           : parent.left
+                verticalCenter : parent.verticalCenter
+                leftMargin     : Style.main.leftMargin
+            }
+            color: Style.main.text
+            font {
+                pointSize : Style.accounts.sizeChevron * Style.pt
+                family    : Style.fontawesome.name
+            }
+            text: Style.fa.chevron_down
+
+            MouseArea {
+                anchors.fill: parent
+                onClicked : {
+                    if (root.state=="connected") {
+                        mainaccRow.toggle_accountSettings()
+                    }
+                }
+                cursorShape : root.state == "connected" ? Qt.PointingHandCursor : Qt.ArrowCursor
+                Accessible.role: Accessible.Button
+                Accessible.name: mainaccRow.actionName
+                Accessible.description: mainaccRow.actionName
+                Accessible.onPressAction : {
+                    if (root.state=="connected") {
+                        mainaccRow.toggle_accountSettings()
+                    }
+                }
+                Accessible.ignored: root.state!="connected" || !root.enabled
+            }
+        }
+
+        // account name
+        TextMetrics {
+            id: accountMetrics
+            font : accountName.font
+            elide: Qt.ElideMiddle
+            elideWidth: (
+                statusMark.anchors.leftMargin
+                - toggleIcon.anchors.leftMargin
+            )
+            text: account
+        }
+        Text {
+            id: accountName
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : toggleIcon.left
+                leftMargin     : Style.main.leftMargin
+            }
+            color: Style.main.text
+            font {
+                pointSize : (Style.main.fontSize+2*Style.px) * Style.pt
+            }
+            text: accountMetrics.elidedText
+        }
+
+        // status
+        ClickIconText {
+            id: statusMark
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : parent.left
+                leftMargin     : row_width/2
+            }
+            text      : qsTr("connected", "status of a listed logged-in account")
+            iconText  : Style.fa.circle_o
+            textColor : Style.main.textGreen
+            enabled   : false
+            Accessible.ignored: true
+        }
+
+        // export
+        ClickIconText {
+            id: exportAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : parent.left
+                leftMargin     : 5.5*row_width/8
+            }
+            text      : qsTr("Export All", "todo")
+            iconText  : Style.fa.floppy_o
+            textBold  : true
+            textColor : Style.main.textBlue
+            onClicked: {
+                dialogExport.currentIndex = 0
+                dialogExport.address = account
+                dialogExport.show()
+            }
+        }
+
+        // logout
+        ClickIconText {
+            id: logoutAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : exportAccount.right
+                leftMargin     : root.spacingLastButtons
+            }
+            text      : qsTr("Log out", "action to log out a connected account")
+            iconText  : Style.fa.power_off
+            textBold  : true
+            textColor : Style.main.textBlue
+        }
+
+        // remove
+        ClickIconText {
+            id: deleteAccount
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : logoutAccount.right
+                leftMargin     : root.spacingLastButtons
+            }
+            text      : qsTr("Remove", "deletes an account from the account settings page")
+            iconText  : Style.fa.trash_o
+            textColor : Style.main.text
+            onClicked : {
+                dialogGlobal.input=iAccount
+                dialogGlobal.state="deleteUser"
+                dialogGlobal.show()
+            }
+        }
+
+
+        // functions
+        function toggle_accountSettings() {
+            if (root.state=="connected") {
+                if (mainaccRow.state=="collapsed" ) {
+                    mainaccRow.state="expanded"
+                } else {
+                    mainaccRow.state="collapsed"
+                }
+            }
+        }
+
+        states: [
+            State {
+                name: "collapsed"
+                PropertyChanges { target : toggleIcon  ; text      : root.state=="connected" ? Style.fa.chevron_down : " " }
+                PropertyChanges { target : accountName ; font.bold : false                 }
+                PropertyChanges { target : mainaccRow  ; color     : Style.main.background }
+                PropertyChanges { target : addressList ; visible   : false                 }
+            },
+            State {
+                name: "expanded"
+                PropertyChanges { target : toggleIcon  ; text      : Style.fa.chevron_up               }
+                PropertyChanges { target : accountName ; font.bold : true                              }
+                PropertyChanges { target : mainaccRow  ; color     : Style.accounts.backgroundExpanded }
+                PropertyChanges { target : addressList ; visible   : true                              }
+            }
+        ]
+    }
+
+    // List of adresses
+    Column {
+        id: addressList
+        anchors.left : parent.left
+        width: row_width
+        visible: false
+        property alias model : repeaterAddresses.model
+
+        Repeater {
+            id: repeaterAddresses
+            model: ["one", "two"]
+
+            Rectangle {
+                id: addressRow
+                anchors {
+                    left  : parent.left
+                    right : parent.right
+                }
+                height: Style.accounts.heightAddrRow
+                color: Style.accounts.backgroundExpanded
+
+                // iconText level down
+                Text {
+                    id: levelDown
+                    anchors {
+                        left           : parent.left
+                        leftMargin     : Style.accounts.leftMarginAddr
+                        verticalCenter : wrapAddr.verticalCenter
+                    }
+                    text        : Style.fa.level_up
+                    font.family : Style.fontawesome.name
+                    color       : Style.main.textDisabled
+                    rotation    : 90
+                }
+
+                Rectangle {
+                    id: wrapAddr
+                    anchors {
+                        top         : parent.top
+                        left        : levelDown.right
+                        right       : parent.right
+                        leftMargin  : Style.main.leftMargin
+                        rightMargin : Style.main.rightMargin
+                    }
+                    height: Style.accounts.heightAddr
+                    border {
+                        width : Style.main.border
+                        color : Style.main.line
+                    }
+                    color: Style.accounts.backgroundAddrRow
+
+                    TextMetrics {
+                        id: addressMetrics
+                        font: address.font
+                        elideWidth: (
+                            wrapAddr.width
+                            - address.anchors.leftMargin
+                            - 2*exportAlias.width
+                            - 3*exportAlias.anchors.rightMargin
+                        )
+                        elide: Qt.ElideMiddle
+                        text: modelData
+                    }
+
+                    Text {
+                        id: address
+                        anchors {
+                            verticalCenter : parent.verticalCenter
+                            left: parent.left
+                            leftMargin: Style.main.leftMargin
+                        }
+                        font.pointSize :  Style.main.fontSize * Style.pt
+                        color: Style.main.text
+                        text: addressMetrics.elidedText
+                    }
+
+                    // export
+                    ClickIconText {
+                        id: exportAlias
+                        anchors {
+                            verticalCenter: parent.verticalCenter
+                            right: importAlias.left
+                            rightMargin: Style.main.rightMargin
+                        }
+                        text: qsTr("Export", "todo")
+                        iconText: Style.fa.floppy_o
+                        textBold: true
+                        textColor: Style.main.textBlue
+                        onClicked: {
+                            dialogExport.address = listalias[index]
+                            dialogExport.show()
+                        }
+                    }
+
+                    // import
+                    ClickIconText {
+                        id: importAlias
+                        anchors {
+                            verticalCenter: parent.verticalCenter
+                            right: parent.right
+                            rightMargin: Style.main.rightMargin
+                        }
+                        text: qsTr("Import", "todo")
+                        iconText: Style.fa.upload
+                        textBold: true
+                        textColor: enabled ? Style.main.textBlue : Style.main.textDisabled
+                        onClicked: {
+                            dialogImport.address = listalias[index]
+                            dialogImport.show()
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // line
+    Rectangle {
+        id: line
+        color: Style.accounts.line
+        height: Style.accounts.heightLine
+        width: root.row_width
+    }
+
+
+    states: [
+        State {
+            name: "connected"
+            PropertyChanges {
+                target : addressList
+                model  : listalias
+            }
+            PropertyChanges {
+                target : toggleIcon
+                color  : Style.main.text
+            }
+            PropertyChanges {
+                target : accountName
+                color  : Style.main.text
+            }
+            PropertyChanges {
+                target    : statusMark
+                textColor : Style.main.textGreen
+                text      : qsTr("connected", "status of a listed logged-in account")
+                iconText  : Style.fa.circle
+            }
+            PropertyChanges {
+                target: exportAccount
+                visible: true
+            }
+            PropertyChanges {
+                target : logoutAccount
+                text   : qsTr("Log out", "action to log out a connected account")
+                onClicked : {
+                    mainaccRow.state="collapsed"
+                    dialogGlobal.state = "logout"
+                    dialogGlobal.input = root.iAccount
+                    dialogGlobal.show()
+                    dialogGlobal.confirmed()
+                }
+            }
+        },
+        State {
+            name: "disconnected"
+            PropertyChanges {
+                target : addressList
+                model  : 0
+            }
+            PropertyChanges {
+                target : toggleIcon
+                color  : Style.main.textDisabled
+            }
+            PropertyChanges {
+                target : accountName
+                color  : Style.main.textDisabled
+            }
+            PropertyChanges {
+                target    : statusMark
+                textColor : Style.main.textDisabled
+                text      : qsTr("disconnected", "status of a listed logged-out account")
+                iconText  : Style.fa.circle_o
+            }
+            PropertyChanges {
+                target : logoutAccount
+                text   : qsTr("Log in", "action to log in a disconnected account")
+                onClicked : {
+                    dialogAddUser.username = root.listalias[0]
+                    dialogAddUser.show()
+                    dialogAddUser.inputPassword.focusInput = true
+                }
+            }
+            PropertyChanges {
+                target: exportAccount
+                visible: false
+            }
+        }
+    ]
+}

internal/frontend/qml/ImportExportUI/Credits.qml

@@ -0,0 +1,51 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// credits
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    Rectangle {
+        anchors.centerIn: parent
+        width: Style.main.width
+        height: root.parent.height - 6*Style.dialog.titleSize
+        color: "transparent"
+
+        ListView {
+            anchors.fill: parent
+            clip: true
+            model: go.credits.split(";")
+
+            delegate: AccessibleText {
+                anchors.horizontalCenter: parent.horizontalCenter
+                text: modelData
+                color: Style.main.text
+                font.pointSize:  Style.main.fontSize * Style.pt
+            }
+
+            footer: ButtonRounded {
+                anchors.horizontalCenter: parent.horizontalCenter
+                text: qsTr("Close", "close window")
+                onClicked: dialogCredits.hide()
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DateBox.qml

@@ -0,0 +1,220 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for year / month / day
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import QtQml.Models 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+ComboBox {
+    id: root
+
+    property string placeholderText : "none"
+    property var    dropDownStyle   : Style.dropDownLight
+    property real   radius          : Style.dialog.radiusButton
+    property bool   below           : true
+
+    onDownChanged : {
+        root.below = popup.y>0
+    }
+
+
+    font.pointSize : Style.main.fontSize * Style.pt
+
+    spacing : Style.dialog.spacing
+    height  : Style.dialog.heightInput
+    width   : 10*Style.px
+
+    function updateWidth() {
+        // make the width according to localization ( especially for Months)
+        var max = 10*Style.px
+        if (root.model === undefined) return
+        for (var i=-1; i<root.model.length; ++i){
+            metrics.text = i<0 ? root.placeholderText : root.model[i]+"MM" // "M" for extra space
+            max = Math.max(max, metrics.width)
+        }
+        root.width = root.spacing + max + root.spacing + indicatorIcon.width + root.spacing
+        //console.log("width updated", root.placeholderText, root.width)
+    }
+
+    TextMetrics {
+        id: metrics
+        font: root.font
+        text: placeholderText
+    }
+
+
+    indicator: Text {
+        id: indicatorIcon
+        color: root.enabled  ? dropDownStyle.highlight : dropDownStyle.inactive
+        text: root.down ? Style.fa.chevron_up : Style.fa.chevron_down
+        font.family: Style.fontawesome.name
+        anchors {
+            right: parent.right
+            rightMargin: root.spacing
+            verticalCenter: parent.verticalCenter
+        }
+    }
+
+    contentItem: Text {
+        id: boxItem
+        leftPadding: root.spacing
+        rightPadding: root.spacing
+
+        text              : enabled && root.currentIndex>=0 ? root.displayText : placeholderText
+        font              : root.font
+        color             : root.enabled ? dropDownStyle.text : dropDownStyle.inactive
+        verticalAlignment : Text.AlignVCenter
+        elide             : Text.ElideRight
+    }
+
+    background: Rectangle {
+        color: Style.transparent
+
+        MouseArea {
+            anchors.fill: parent
+            onClicked: root.down ?  root.popup.close() : root.popup.open()
+        }
+    }
+
+
+    DelegateModel { // FIXME QML DelegateModel: Error creating delegate
+        id: filteredData
+        model: root.model
+        filterOnGroup: "filtered"
+        groups: DelegateModelGroup {
+            id: filtered
+            name: "filtered"
+            includeByDefault: true
+        }
+        delegate: root.delegate
+    }
+
+    function filterItems(minIndex,maxIndex) {
+        // filter
+        var rowCount = filteredData.items.count
+        if (rowCount<=0) return
+        //console.log(" filter", root.placeholderText, rowCount, minIndex, maxIndex)
+        for (var iItem = 0; iItem < rowCount; iItem++) {
+            var entry = filteredData.items.get(iItem);
+            entry.inFiltered = ( iItem >= minIndex && iItem <= maxIndex )
+            //console.log("     inserted ", iItem, rowCount, entry.model.modelData, entry.inFiltered )
+        }
+    }
+
+    delegate: ItemDelegate {
+        id: thisItem
+        width         : view.width
+        height        : Style.dialog.heightInput
+        leftPadding   : root.spacing
+        rightPadding  : root.spacing
+        topPadding    : 0
+        bottomPadding : 0
+
+        property int index : {
+            //console.log( "index: ", thisItem.DelegateModel.itemsIndex )
+            return thisItem.DelegateModel.itemsIndex
+        }
+
+        onClicked : {
+            //console.log("thisItem click", thisItem.index)
+            root.currentIndex = thisItem.index
+            root.activated(thisItem.index)
+            root.popup.close()
+        }
+
+
+        contentItem: Text {
+            text: modelData
+            color: dropDownStyle.text
+            font: root.font
+            elide: Text.ElideRight
+            verticalAlignment: Text.AlignVCenter
+        }
+
+        background: Rectangle {
+            color: thisItem.hovered ? dropDownStyle.highlight : dropDownStyle.background
+            Text {
+                anchors{
+                    right: parent.right
+                    rightMargin: root.spacing
+                    verticalCenter: parent.verticalCenter
+                }
+                font {
+                    family: Style.fontawesome.name
+                }
+                text: root.currentIndex == thisItem.index ? Style.fa.check : ""
+                color: thisItem.hovered ? dropDownStyle.text : dropDownStyle.highlight
+            }
+
+            Rectangle {
+                anchors {
+                    left: parent.left
+                    right: parent.right
+                    bottom: parent.bottom
+                }
+                height: Style.dialog.borderInput
+                color: dropDownStyle.separator
+            }
+        }
+    }
+
+    popup: Popup {
+        y: root.height
+        x: -background.strokeWidth
+        width: root.width + 2*background.strokeWidth
+        modal: true
+        closePolicy: Popup.CloseOnPressOutside | Popup.CloseOnEscape
+        topPadding: background.radiusTopLeft + 2*background.strokeWidth
+        bottomPadding: background.radiusBottomLeft + 2*background.strokeWidth
+        leftPadding: 2*background.strokeWidth
+        rightPadding: 2*background.strokeWidth
+
+        contentItem: ListView {
+            id: view
+            clip: true
+            implicitHeight: winMain.height/3
+            model: filteredData // if you want to slide down to position: popup.visible ? root.delegateModel : null
+            currentIndex: root.currentIndex
+
+            ScrollIndicator.vertical: ScrollIndicator { }
+        }
+
+        background: RoundedRectangle {
+            radiusTopLeft     : root.below  ?  0 : root.radius
+            radiusBottomLeft  : !root.below ?  0 : root.radius
+            radiusTopRight    : radiusTopLeft
+            radiusBottomRight : radiusBottomLeft
+            fillColor         : dropDownStyle.background
+        }
+    }
+
+    Component.onCompleted: {
+        //console.log(" box ", label)
+        root.updateWidth()
+        root.filterItems(0,model.length-1)
+    }
+
+    onModelChanged :{
+        //console.log("model changed", root.placeholderText)
+        root.updateWidth()
+        root.filterItems(0,model.length-1)
+    }
+}
+

internal/frontend/qml/ImportExportUI/DateInput.qml

@@ -0,0 +1,264 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+
+    width  : row.width + (root.label == "" ? 0 : textlabel.width)
+    height : row.height
+    color  : Style.transparent
+
+    property alias  label        : textlabel.text
+    property string metricsLabel : root.label
+    property var dropDownStyle   : Style.dropDownLight
+
+    // dates
+    property date  currentDate    : new Date()  // default now
+    property date  minDate        : new Date(0) // default epoch start
+    property date  maxDate        : new Date()  // default now
+    property bool  isMaxDateToday : false
+    property int   unix           : Math.floor(currentDate.getTime()/1000)
+
+    onMinDateChanged: {
+        if (isNaN(minDate.getTime()) || minDate.getTime() > maxDate.getTime()) {
+            minDate = new Date(0)
+        }
+        //console.log(" minDate changed:", root.label, minDate.toDateString())
+        updateRange()
+    }
+    onMaxDateChanged: {
+        if (isNaN(maxDate.getTime()) || minDate.getTime() > maxDate.getTime()) {
+            maxDate = new Date()
+        }
+        //console.log(" maxDate changed:", root.label, maxDate.toDateString())
+        updateRange()
+    }
+
+    RoundedRectangle {
+        id: background
+        anchors.fill      : row
+        strokeColor       : dropDownStyle.line
+        strokeWidth       : Style.dialog.borderInput
+        fillColor         : dropDownStyle.background
+        radiusTopLeft     : row.children[0].down                     && !row.children[0].below                     ? 0 : Style.dialog.radiusButton
+        radiusBottomLeft  : row.children[0].down                     && row.children[0].below                      ? 0 : Style.dialog.radiusButton
+        radiusTopRight    : row.children[row.children.length-1].down && !row.children[row.children.length-1].below ? 0 : Style.dialog.radiusButton
+        radiusBottomRight : row.children[row.children.length-1].down && row.children[row.children.length-1].below  ? 0 : Style.dialog.radiusButton
+    }
+
+    TextMetrics {
+        id: textMetrics
+        text: root.metricsLabel+"M"
+        font: textlabel.font
+    }
+
+    Text {
+        id: textlabel
+        anchors {
+            left           : root.left
+            verticalCenter : root.verticalCenter
+        }
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: dropDownStyle.labelBold
+        }
+        color: dropDownStyle.text
+        width: textMetrics.width
+        verticalAlignment: Text.AlignVCenter
+    }
+
+    Row {
+        id: row
+
+        anchors {
+            left   : root.label=="" ? root.left : textlabel.right
+            bottom : root.bottom
+        }
+        padding   : Style.dialog.borderInput
+
+        DateBox {
+            id: monthInput
+            placeholderText: qsTr("Month")
+            enabled: !allDates
+            model: gui.allMonths
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+
+        Rectangle {
+            width: Style.dialog.borderInput
+            height: monthInput.height
+            color: dropDownStyle.line
+            anchors.verticalCenter: parent.verticalCenter
+        }
+
+        DateBox {
+            id: dayInput
+            placeholderText: qsTr("Day")
+            enabled: !allDates
+            model: gui.allDays
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+
+        Rectangle {
+            width: Style.dialog.borderInput
+            height: monthInput.height
+            color: dropDownStyle.line
+        }
+
+        DateBox {
+            id: yearInput
+            placeholderText: qsTr("Year")
+            enabled: !allDates
+            model: gui.allYears
+            onActivated: updateRange()
+            anchors.verticalCenter: parent.verticalCenter
+            dropDownStyle: root.dropDownStyle
+            onDownChanged: {
+                if (root.isMaxDateToday){
+                    root.maxDate = new Date()
+                }
+            }
+        }
+    }
+
+
+    function setDate(d) {
+        //console.trace()
+        //console.log( "    setDate ", label, d)
+        if (isNaN(d = parseInt(d))) return
+        var newUnix = Math.min(maxDate.getTime(), d*1000) // seconds to ms
+        newUnix = Math.max(minDate.getTime(), newUnix)
+        root.updateRange(new Date(newUnix))
+        //console.log( "        set ", currentDate.getTime())
+    }
+
+
+    function updateRange(curr) {
+        if (curr === undefined || isNaN(curr.getTime())) curr = root.getCurrentDate()
+        //console.log( "    update", label, curr, curr.getTime())
+        //console.trace()
+        if (isNaN(curr.getTime())) return // shouldn't happen
+        // full system date range
+        var firstYear = parseInt(gui.allYears[0])
+        var firstDay = parseInt(gui.allDays[0])
+        if ( isNaN(firstYear) || isNaN(firstDay) ) return
+        // get minimal and maximal available year, month, day
+        // NOTE: The order is important!!!
+        var minYear  = minDate.getFullYear()
+        var maxYear  = maxDate.getFullYear()
+        var minMonth = (curr.getFullYear() == minYear  ? minDate.getMonth() : 0  )
+        var maxMonth = (curr.getFullYear() == maxYear  ? maxDate.getMonth() : 11 )
+        var minDay   = (
+            curr.getFullYear() == minYear  &&
+            curr.getMonth()    == minMonth ?
+            minDate.getDate() : firstDay
+        )
+        var maxDay   = (
+            curr.getFullYear() == maxYear  &&
+            curr.getMonth()    == maxMonth ?
+            maxDate.getDate() : gui.daysInMonth(curr.getFullYear(), curr.getMonth()+1)
+        )
+
+        //console.log("update ranges: ", root.label, minYear, maxYear, minMonth+1, maxMonth+1, minDay, maxDay)
+        //console.log("update indexes: ", root.label, firstYear-minYear, firstYear-maxYear, minMonth, maxMonth, minDay-firstDay, maxDay-firstDay)
+
+
+        yearInput.filterItems(firstYear-maxYear, firstYear-minYear)
+        monthInput.filterItems(minMonth,maxMonth) // getMonth() is index not a month (i.e. Jan==0)
+        dayInput.filterItems(minDay-1,maxDay-1)
+
+        // keep ordering from model not from filter
+        yearInput  .currentIndex = firstYear - curr.getFullYear()
+        monthInput .currentIndex = curr.getMonth() // getMonth() is index not a month (i.e. Jan==0)
+        dayInput   .currentIndex = curr.getDate()-firstDay
+
+        /*
+         console.log(
+             "update current indexes: ", root.label,
+             curr.getFullYear() , '->' , yearInput.currentIndex  ,
+             gui.allMonths[curr.getMonth()]    , '->' , monthInput.currentIndex ,
+             curr.getDate()     , '->' , dayInput.currentIndex
+         )
+         */
+
+        // test if current date changed
+        if (
+            yearInput.currentText  == root.currentDate.getFullYear()                      &&
+            monthInput.currentText == root.currentDate.toLocaleString(gui.locale, "MMM") &&
+            dayInput.currentText   == gui.prependZeros(root.currentDate.getDate(),2)
+        ) {
+            //console.log(" currentDate NOT changed", label, root.currentDate.toDateString())
+            return
+        }
+
+        root.currentDate = root.getCurrentDate()
+        // console.log(" currentDate changed", label, root.currentDate.toDateString())
+    }
+
+    // get current date from selected
+    function getCurrentDate() {
+        if (isNaN(root.currentDate.getTime())) { // wrong current ?
+            console.log("!WARNING! Wrong current date format", root.currentDate)
+            root.currentDate = new Date(0)
+        }
+        var currentString = ""
+        var currentUnix = root.currentDate.getTime()
+        if (
+            yearInput.currentText  != ""                         &&
+            yearInput.currentText  != yearInput.placeholderText  &&
+            monthInput.currentText != ""                         &&
+            monthInput.currentText != monthInput.placeholderText
+        ) {
+            var day = gui.daysInMonth(yearInput.currentText, monthInput.currentText)
+            if (!isNaN(parseInt(dayInput.currentText))) {
+                day = Math.min(day, parseInt(dayInput.currentText))
+            }
+            var month = gui.allMonths.indexOf(monthInput.currentText)
+            var year = parseInt(yearInput.currentText)
+            var pickedDate = new Date(year, month, day)
+            // Compensate automatic DST in windows
+            if (pickedDate.getDate() != day) {
+                pickedDate.setTime(pickedDate.getTime() + 60*60*1000) // add hour
+            }
+            currentUnix = pickedDate.getTime()
+        }
+        return new Date(Math.max(
+            minDate.getTime(),
+            Math.min(maxDate.getTime(), currentUnix)
+        ))
+    }
+}

internal/frontend/qml/ImportExportUI/DateRange.qml

@@ -0,0 +1,123 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Column {
+    id: dateRange
+
+    property var   structure : transferRules
+    property string sourceID : "-1"
+
+    property alias allDates      : allDatesBox.checked
+    property alias inputDateFrom : inputDateFrom
+    property alias inputDateTo   : inputDateTo
+
+    function getRange() {common.getRange()}
+    function setRangeFromTo(from, to) {common.setRangeFromTo(from, to)}
+    function applyRange() {common.applyRange()}
+
+    property var dropDownStyle : Style.dropDownLight
+    property var isDark : dropDownStyle.background == Style.dropDownDark.background
+
+    spacing: Style.dialog.spacing
+
+    DateRangeFunctions {id:common}
+
+    DateInput {
+        id: inputDateFrom
+        label: qsTr("From:")
+        currentDate: gui.netBday
+        maxDate: inputDateTo.currentDate
+        dropDownStyle: dateRange.dropDownStyle
+    }
+
+    Rectangle {
+        width: inputDateTo.width
+        height: Style.dialog.borderInput / 2
+        color: isDark ? dropDownStyle.separator : Style.transparent
+    }
+
+    DateInput {
+        id: inputDateTo
+        label: qsTr("To:")
+        metricsLabel: inputDateFrom.label
+        currentDate: new Date() // now
+        minDate: inputDateFrom.currentDate
+        isMaxDateToday: true
+        dropDownStyle: dateRange.dropDownStyle
+    }
+
+    Rectangle {
+        width: inputDateTo.width
+        height: Style.dialog.borderInput
+        color: isDark ? dropDownStyle.separator : Style.transparent
+    }
+
+    CheckBoxLabel {
+        id: allDatesBox
+        text            : qsTr("All dates")
+        anchors.right   : inputDateTo.right
+        checkedSymbol   : Style.fa.toggle_on
+        uncheckedSymbol : Style.fa.toggle_off
+        uncheckedColor  : Style.main.textDisabled
+        textColor       : dropDownStyle.text
+        symbolPointSize : Style.dialog.iconSize * Style.pt * 1.1
+        spacing         : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: allDatesBox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: allDatesBox.symbolPointSize
+            }
+        }
+
+        Rectangle {
+            color: allDatesBox.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: allDatesBox.left
+                verticalCenter: allDatesBox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DateRangeFunctions.qml

@@ -0,0 +1,81 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    /*
+     NOTE: need to be in obejct with
+     id: dateRange
+
+     property var   structure : structureExternal
+     property string sourceID : structureExternal.getID ( -1 )
+
+     property alias allDates      : allDatesBox.checked
+     property alias inputDateFrom : inputDateFrom
+     property alias inputDateTo   : inputDateTo
+
+     function getRange() {common.getRange()}
+     function applyRange() {common.applyRange()}
+     */
+
+    function resetRange() {
+        inputDateFrom.setDate(gui.netBday.getTime())
+        inputDateTo.setDate((new Date()).getTime())
+    }
+
+    function setRangeFromTo(folderFrom, folderTo){ // unix time in seconds
+        if ( folderFrom == 0 && folderTo ==0 ) {
+            dateRange.allDates = true
+        } else {
+            dateRange.allDates = false
+            inputDateFrom.setDate(folderFrom)
+            inputDateTo.setDate(folderTo)
+        }
+    }
+
+    function getRange(){ // unix time in seconds
+        //console.log(" ==== GET RANGE === ")
+        //console.trace()
+        var folderFrom = dateRange.structure.globalFromDate
+        var folderTo = dateRange.structure.globalToDate
+
+        root.setRangeFromTo(folderFrom, folderTo)
+    }
+
+    function applyRange(){ // unix time is seconds
+        if (dateRange.allDates)  structure.setFromToDate(dateRange.sourceID, 0, 0)
+        else {
+            var endOfDay = new Date(inputDateTo.unix*1000)
+            endOfDay.setHours(23,59,59,999)
+            var endOfDayUnix = parseInt(endOfDay.getTime()/1000)
+            structure.setFromToDate(dateRange.sourceID, inputDateFrom.unix, endOfDayUnix)
+        }
+    }
+
+    Component.onCompleted: {
+        inputDateFrom.updateRange(gui.netBday)
+        inputDateTo.updateRange(new Date())
+        //getRange()
+    }
+}
+

internal/frontend/qml/ImportExportUI/DateRangeMenu.qml

@@ -0,0 +1,163 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Rectangle {
+    id:root
+
+    width  : icon.width + indicator.width + 3*padding
+    height : icon.height + 3*padding
+
+    property real padding : Style.dialog.spacing
+    property bool down    : popup.visible
+
+    property var  structure   : transferRules
+    property string  sourceID : ""
+    property int  sourceFromDate : 0
+    property int  sourceToDate : 0
+
+    color: Style.transparent
+
+    RoundedRectangle {
+        anchors.fill: parent
+        radiusTopLeft: root.down ? 0 : Style.dialog.radiusButton
+        fillColor: root.down ? Style.main.textBlue : Style.transparent
+    }
+
+    Text {
+        id: icon
+        text: Style.fa.calendar_o
+        anchors {
+            left           : parent.left
+            leftMargin     : root.padding
+            verticalCenter : parent.verticalCenter
+        }
+
+        color: root.enabled ? (
+            root.down ? Style.main.background : Style.main.text
+        ) : Style.main.textDisabled
+
+        font.family : Style.fontawesome.name
+
+        Text {
+            anchors {
+                verticalCenter: parent.bottom
+                horizontalCenter: parent.right
+            }
+
+            color          : !root.down && root.enabled ? Style.main.textRed : icon.color
+            text           : Style.fa.exclamation_circle
+            visible        : !dateRangeInput.allDates
+            font.pointSize : root.padding * Style.pt * 1.5
+            font.family    : Style.fontawesome.name
+        }
+    }
+
+
+    Text {
+        id: indicator
+        anchors {
+            right          : parent.right
+            rightMargin    : root.padding
+            verticalCenter : parent.verticalCenter
+        }
+
+        text  : root.down ? Style.fa.chevron_up : Style.fa.chevron_down
+        color : !root.down && root.enabled ? Style.main.textBlue : icon.color
+        font.family : Style.fontawesome.name
+    }
+
+    MouseArea {
+        anchors.fill: root
+        onClicked: {
+            popup.open()
+        }
+    }
+
+    Popup {
+        id: popup
+
+        x      : -width
+        modal  : true
+        clip   : true
+
+        topPadding : 0
+
+        background: RoundedRectangle {
+            fillColor   : Style.bubble.paneBackground
+            strokeColor : fillColor
+            radiusTopRight: 0
+
+            RoundedRectangle {
+                anchors {
+                    left: parent.left
+                    right: parent.right
+                    top: parent.top
+                }
+                height: Style.dialog.heightInput
+                fillColor: Style.dropDownDark.highlight
+                strokeColor: fillColor
+                radiusTopRight: 0
+                radiusBottomLeft: 0
+                radiusBottomRight: 0
+            }
+        }
+
+        contentItem : Column {
+            spacing: Style.dialog.spacing
+
+            Text {
+                anchors {
+                    left: parent.left
+                }
+
+                text              : qsTr("Import date range")
+                font.bold         : Style.dropDownDark.labelBold
+                color             : Style.dropDownDark.text
+                height            : Style.dialog.heightInput
+                verticalAlignment : Text.AlignVCenter
+            }
+
+            DateRange {
+                id: dateRangeInput
+                allDates: true
+                structure: root.structure
+                sourceID: root.sourceID
+                dropDownStyle: Style.dropDownDark
+            }
+        }
+
+        onAboutToShow : updateRange()
+        onAboutToHide : dateRangeInput.applyRange()
+    }
+
+    function updateRange() {
+        dateRangeInput.setRangeFromTo(root.sourceFromDate, root.sourceToDate)
+    }
+
+    Connections {
+        target:root
+        onSourceFromDateChanged: root.updateRange()
+        onSourceToDateChanged: root.updateRange()
+    }
+}

internal/frontend/qml/ImportExportUI/DialogExport.qml

@@ -0,0 +1,459 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Export dialog
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+// TODO
+//  - make ErrorDialog module
+//  - map decision to error code : ask (default), skip ()
+//  - what happens when import fails ? heuristic to find mail where to start from
+
+Dialog {
+    id: root
+
+    enum Page {
+        LoadingStructure = 0, Options, Progress
+    }
+
+    title : set_title()
+
+    property string address
+    property alias finish: finish
+
+    property string msgClearUnfished: qsTr ("Remove already exported files.")
+
+    isDialogBusy : true // currentIndex == 0 ||  currentIndex == 3 
+
+    signal cancel()
+    signal okay()
+
+
+    Rectangle { // 0
+        id: dialogLoading
+        width: root.width
+        height: root.height
+        color: Style.transparent
+
+        Text {
+            anchors.centerIn : dialogLoading
+            font.pointSize: Style.dialog.titleSize * Style.pt
+            color: Style.dialog.text
+            horizontalAlignment: Text.AlignHCenter
+            text: qsTr("Loading folders and labels for", "todo") +"\n" + address
+        }
+    }
+
+    Rectangle { // 1
+        id: dialogInput
+        width: root.width
+        height: root.height
+        color: Style.transparent
+
+        Row {
+            id: inputRow
+            anchors {
+                topMargin        : root.titleHeight
+                top              : parent.top
+                horizontalCenter : parent.horizontalCenter
+            }
+            spacing: 3*Style.main.leftMargin
+            property real columnWidth  : (root.width - Style.main.leftMargin - inputRow.spacing - Style.main.rightMargin) / 2
+            property real columnHeight :  root.height  - root.titleHeight - Style.main.leftMargin
+
+
+            ExportStructure {
+                id: sourceFoldersInput
+                width  : inputRow.columnWidth
+                height : inputRow.columnHeight
+                title  : qsTr("From: %1", "todo").arg(address)
+            }
+
+            Column {
+                spacing: (inputRow.columnHeight - dateRangeInput.height - outputFormatInput.height - outputPathInput.height - buttonRow.height -  infotipEncrypted.height) / 4
+
+                DateRange{
+                    id: dateRangeInput
+                }
+
+                OutputFormat {
+                    id: outputFormatInput
+                }
+
+                Row {
+                    spacing: Style.dialog.spacing
+                    CheckBoxLabel {
+                        id: exportEncrypted
+                        text: qsTr("Export emails that cannot be decrypted as ciphertext")
+                        anchors {
+                            bottom: parent.bottom
+                            bottomMargin: Style.dialog.fontSize/1.8
+                        }
+                    }
+
+                    InfoToolTip {
+                        id: infotipEncrypted
+                        anchors {
+                            verticalCenter: exportEncrypted.verticalCenter
+                        }
+                        info: qsTr("Checking this option will export all emails that cannot be decrypted in ciphertext. If this option is not checked, these emails will not be exported", "todo")
+                    }
+                }
+
+                FileAndFolderSelect {
+                    id: outputPathInput
+                    title: qsTr("Select location of export:", "todo")
+                    width  : inputRow.columnWidth // stretch folder input
+                }
+
+                Row {
+                    id: buttonRow
+                    anchors.right : parent.right
+                    spacing       : Style.dialog.rightMargin
+
+                    ButtonRounded {
+                        id:buttonCancel
+                        fa_icon: Style.fa.times
+                        text: qsTr("Cancel")
+                        color_main: Style.main.textBlue
+                        onClicked : root.cancel()
+                    }
+
+                    ButtonRounded {
+                        id: buttonNext
+                        fa_icon: Style.fa.check
+                        text: qsTr("Export","todo")
+                        enabled: transferRules != 0
+                        color_main: Style.dialog.background
+                        color_minor: enabled ? Style.dialog.textBlue : Style.main.textDisabled
+                        isOpaque: true
+                        onClicked : root.okay()
+                    }
+                }
+            }
+        }
+    }
+
+    Rectangle { // 2
+        id: progressStatus
+        width: root.width
+        height: root.height
+        color: "transparent"
+
+        Row {
+            anchors {
+                bottom: progressbarExport.top
+                bottomMargin: Style.dialog.heightSeparator
+                left: progressbarExport.left
+            }
+            spacing: Style.main.rightMargin
+            AccessibleText {
+                id: statusLabel
+                text : qsTr("Status:")
+                font.pointSize: Style.main.iconSize * Style.pt
+                color : Style.main.text
+            }
+            AccessibleText {
+                anchors.baseline: statusLabel.baseline
+                text :  {
+                    if (progressbarExport.isFinished) return qsTr("finished")
+                    if (go.progressDescription == "") return qsTr("exporting")
+                    return go.progressDescription
+                }
+                elide: Text.ElideMiddle
+                width: progressbarExport.width - parent.spacing - statusLabel.width
+                font.pointSize: Style.dialog.textSize * Style.pt
+                color : Style.main.textDisabled
+            }
+        }
+
+        ProgressBar {
+            id: progressbarExport
+            implicitWidth  : 2*progressStatus.width/3
+            implicitHeight : Style.exporting.rowHeight
+            value: go.progress
+            property int current:  go.total * go.progress
+            property bool isFinished:  finishedPartBar.width == progressbarExport.width
+            anchors {
+                centerIn: parent
+            }
+            background: Rectangle {
+                radius         : Style.exporting.boxRadius
+                color          : Style.exporting.progressBackground
+            }
+            contentItem: Item {
+                Rectangle {
+                    id: finishedPartBar
+                    width  : parent.width * progressbarExport.visualPosition
+                    height : parent.height
+                    radius : Style.exporting.boxRadius
+                    gradient  : Gradient {
+                        GradientStop { position: 0.00; color: Qt.lighter(Style.exporting.progressStatus,1.1) }
+                        GradientStop { position: 0.66; color: Style.exporting.progressStatus }
+                        GradientStop { position: 1.00; color: Qt.darker(Style.exporting.progressStatus,1.1) }
+                    }
+
+                    Behavior on width {
+                        NumberAnimation { duration:800;  easing.type: Easing.InOutQuad }
+                    }
+                }
+                Text {
+                    anchors.centerIn: parent
+                    text: {
+                        if (progressbarExport.isFinished) {
+                            if (go.progressDescription=="") return qsTr("Export finished","todo")
+                            else return qsTr("Export failed: %1").arg(go.progressDescription)
+                        }
+                        if (
+                            go.progressDescription == gui.enums.progressInit || 
+                            (go.progress==0 && go.description=="")
+                        ) {
+                            if (go.total>1) return qsTr("Estimating the total number of messages (%1)","todo").arg(go.total)
+                            else return qsTr("Estimating the total number of messages","todo")
+                        } 
+                        var msg = qsTr("Exporting message %1 of %2 (%3%)","todo")
+                        if (pauseButton.paused) msg = qsTr("Exporting paused at message %1 of %2 (%3%)","todo")
+                        return msg.arg(progressbarExport.current).arg(go.total).arg(Math.floor(go.progress*100))
+                    }
+                    color: Style.main.background
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                    }
+                }
+            }
+        }
+
+        Row {
+            anchors {
+                top: progressbarExport.bottom
+                topMargin : Style.dialog.heightSeparator
+                horizontalCenter: parent.horizontalCenter
+            }
+            spacing: Style.dialog.rightMargin
+
+            ButtonRounded {
+                id: pauseButton
+                property bool paused : false
+                fa_icon    : paused ? Style.fa.play : Style.fa.pause
+                text       : paused ? qsTr("Resume") : qsTr("Pause")
+                color_main : Style.dialog.textBlue
+                onClicked  : {
+                    if (paused) {
+                        if (winMain.updateState == gui.enums.statusNoInternet) {
+                            go.notifyError(gui.enums.errNoInternet)
+                            return
+                        }
+                        go.resumeProcess()
+                    } else {
+                        go.pauseProcess()
+                    }
+                    paused = !paused
+                    pauseButton.focus=false
+                }
+                visible    : !progressbarExport.isFinished
+            }
+
+            ButtonRounded {
+                fa_icon    : Style.fa.times
+                text       : qsTr("Cancel")
+                color_main : Style.dialog.textBlue
+                visible    : !progressbarExport.isFinished
+                onClicked  : root.ask_cancel_progress()
+            }
+
+            ButtonRounded {
+                id: finish
+                fa_icon     : Style.fa.check
+                text        : qsTr("Okay","todo")
+                color_main  : Style.dialog.background
+                color_minor : Style.dialog.textBlue
+                isOpaque    : true
+                visible     : progressbarExport.isFinished
+                onClicked   : root.okay()
+            }
+        }
+
+        ClickIconText {
+            id: buttonHelp
+            anchors {
+                right        : parent.right
+                bottom       : parent.bottom
+                rightMargin  : Style.main.rightMargin
+                bottomMargin : Style.main.rightMargin
+            }
+            textColor  : Style.main.textDisabled
+            iconText   : Style.fa.question_circle
+            text       : qsTr("Help", "directs the user to the online user guide")
+            textBold   : true
+            onClicked  : Qt.openUrlExternally("https://protonmail.com/support/categories/import-export/")
+        }
+    }
+
+    PopupMessage {
+        id: errorPopup
+        width: root.width
+        height: root.height
+    }
+
+    function check_inputs() {
+        if (currentIndex == 1) {
+            // at least one email to export
+            if (transferRules.rowCount() == 0){
+                errorPopup.show(qsTr("No emails found to export. Please try another address.", "todo"))
+                return false
+            }
+            // at least one source selected
+            /*
+             if (!transferRules.atLeastOneSelected) {
+                 errorPopup.show(qsTr("Please select at least one item to export.", "todo"))
+                 return false
+             }
+             */
+            // check path
+            var folderCheck = go.checkPathStatus(outputPathInput.path)
+            switch (folderCheck) {
+                case gui.enums.pathEmptyPath:
+                errorPopup.show(qsTr("Missing export path. Please select an output folder."))
+                break;
+                case gui.enums.pathWrongPath:
+                errorPopup.show(qsTr("Folder '%1' not found. Please select an output folder.").arg(outputPathInput.path))
+                break;
+                case gui.enums.pathOK | gui.enums.pathNotADir:
+                errorPopup.show(qsTr("File '%1' is not a folder. Please select an output folder.").arg(outputPathInput.path))
+                break;
+                case gui.enums.pathWrongPermissions:
+                errorPopup.show(qsTr("Cannot access folder '%1'. Please check folder permissions.").arg(outputPathInput.path))
+                break;
+            }
+            if (
+                (folderCheck&gui.enums.pathOK)==0 ||
+                (folderCheck&gui.enums.pathNotADir)==gui.enums.pathNotADir
+            ) return false
+            if (winMain.updateState == gui.enums.statusNoInternet) {
+                errorPopup.show(qsTr("Please check your internet connection."))
+                return false
+            }
+        }
+        return true
+    }
+
+    function set_title() {
+        switch(root.currentIndex){
+            case 1 : return qsTr("Select what you'd like to export:")
+            default: return ""
+        }
+    }
+
+    function clear_status() {
+        go.progress=0.0
+        go.total=0.0
+        go.progressDescription=gui.enums.progressInit
+    }
+
+    function ask_cancel_progress(){
+        errorPopup.buttonYes.visible = true
+        errorPopup.buttonNo.visible = true
+        errorPopup.buttonOkay.visible = false
+        errorPopup.show ("Are you sure you want to cancel this export?")
+    }
+
+
+    onCancel : {
+        switch (root.currentIndex) {
+            case 0 :
+            case 1 : root.hide(); break;
+            case 2 : // progress bar 
+            go.cancelProcess();
+            // no break
+            default:
+            root.clear_status()
+            root.currentIndex=1
+        }
+    }
+
+    onOkay : {
+        var isOK = check_inputs()
+        if (!isOK) return
+        timer.interval= currentIndex==1 ? 1 : 300
+        switch (root.currentIndex) {
+            case 2: // progress
+            root.clear_status()
+            root.hide()
+            break
+            case 0: // loading structure
+            dateRangeInput.getRange()
+            //no break
+            default:
+            incrementCurrentIndex()
+            timer.start()
+        }
+    }
+
+    onShow: {
+        if (winMain.updateState==gui.enums.statusNoInternet) {
+            go.checkInternet()
+            if (winMain.updateState==gui.enums.statusNoInternet) {
+                go.notifyError(gui.enums.errNoInternet)
+                root.hide()
+                return
+            }
+        }
+
+        root.clear_status()
+        root.currentIndex=0
+        timer.interval = 300
+        timer.start()
+        dateRangeInput.allDates = true
+    }
+
+    Connections {
+        target: timer
+        onTriggered : {
+            switch (currentIndex) {
+                case 0:
+                go.loadStructureForExport(root.address)
+                sourceFoldersInput.hasItems = (transferRules.rowCount() > 0)
+                break
+                case 2:
+                dateRangeInput.applyRange()
+                go.startExport(
+                    outputPathInput.path,
+                    root.address,
+                    outputFormatInput.checkedText,
+                    exportEncrypted.checked
+                )
+                break
+            }
+        }
+    }
+
+    Connections {
+        target: errorPopup
+
+        onClickedOkay  : errorPopup.hide()
+        onClickedYes : {
+            root.cancel()
+            errorPopup.hide()
+        }
+        onClickedNo  : {
+            errorPopup.hide()
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/DialogYesNo.qml

@@ -0,0 +1,354 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Dialog with Yes/No buttons
+
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Dialog {
+    id: root
+
+    title : ""
+
+    property string input
+
+    property alias question  : msg.text
+    property alias note      : noteText.text
+    property alias answer    : answ.text
+    property alias buttonYes : buttonYes
+    property alias buttonNo  : buttonNo
+
+    isDialogBusy: currentIndex==1
+
+    signal confirmed()
+
+    Column {
+        id: dialogMessage
+        property int heightInputs : msg.height+
+        middleSep.height+
+        buttonRow.height +
+        (checkboxSep.visible ? checkboxSep.height : 0 ) +
+        (noteSep.visible ? noteSep.height : 0 ) +
+        (checkBoxWrapper.visible ? checkBoxWrapper.height : 0 ) +
+        (root.note!="" ? noteText.height : 0 )
+
+        Rectangle { color : "transparent"; width : Style.main.dummy; height : (root.height-dialogMessage.heightInputs)/2 }
+
+        AccessibleText {
+            id:noteText
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+                bold: false
+            }
+            width: 2*root.width/3
+            horizontalAlignment: Text.AlignHCenter
+            wrapMode: Text.Wrap
+        }
+        Rectangle { id: noteSep; visible: note!=""; color : "transparent"; width : Style.main.dummy; height : Style.dialog.heightSeparator}
+
+        AccessibleText {
+            id: msg
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+                bold: true
+            }
+            width: 2*parent.width/3
+            text : ""
+            horizontalAlignment: Text.AlignHCenter
+            wrapMode: Text.Wrap
+        }
+
+        Rectangle { id: checkboxSep; visible: checkBoxWrapper.visible; color : "transparent"; width : Style.main.dummy; height : Style.dialog.heightSeparator}
+        Row {
+            id: checkBoxWrapper
+            property bool isChecked : false
+            visible: root.state=="deleteUser"
+            anchors.horizontalCenter: parent.horizontalCenter
+            spacing: Style.dialog.spacing
+
+            function toggle() {
+                checkBoxWrapper.isChecked = !checkBoxWrapper.isChecked
+            }
+
+            Text {
+                id: checkbox
+                font {
+                    pointSize : Style.dialog.iconSize * Style.pt
+                    family    : Style.fontawesome.name
+                }
+                anchors.verticalCenter : parent.verticalCenter
+                text: checkBoxWrapper.isChecked ? Style.fa.check_square_o : Style.fa.square_o
+                color: checkBoxWrapper.isChecked ? Style.main.textBlue : Style.main.text
+
+                MouseArea {
+                    anchors.fill: parent
+                    onPressed: checkBoxWrapper.toggle()
+                    cursorShape: Qt.PointingHandCursor
+                }
+            }
+            Text {
+                id: checkBoxNote
+                anchors.verticalCenter : parent.verticalCenter
+                text: qsTr("Additionally delete all stored preferences and data", "when removing an account, this extra preference additionally deletes all cached data")
+                color: Style.main.text
+                font.pointSize: Style.dialog.fontSize * Style.pt
+
+                MouseArea {
+                    anchors.fill: parent
+                    onPressed: checkBoxWrapper.toggle()
+                    cursorShape: Qt.PointingHandCursor
+
+                    Accessible.role: Accessible.CheckBox
+                    Accessible.checked: checkBoxWrapper.isChecked
+                    Accessible.name: checkBoxNote.text
+                    Accessible.description: checkBoxNote.text
+                    Accessible.ignored: checkBoxNote.text == ""
+                    Accessible.onToggleAction: checkBoxWrapper.toggle()
+                    Accessible.onPressAction: checkBoxWrapper.toggle()
+                }
+            }
+        }
+
+        Rectangle { id: middleSep; color : "transparent"; width : Style.main.dummy; height : 2*Style.dialog.heightSeparator }
+
+        Row {
+            id: buttonRow
+            anchors.horizontalCenter: parent.horizontalCenter
+            spacing: Style.dialog.spacing
+            ButtonRounded {
+                id:buttonNo
+                color_main : Style.dialog.textBlue
+                fa_icon    : Style.fa.times
+                text       : qsTr("No")
+                onClicked  : root.hide()
+            }
+            ButtonRounded {
+                id: buttonYes
+                color_main  : Style.dialog.background
+                color_minor : Style.dialog.textBlue
+                isOpaque    : true
+                fa_icon     : Style.fa.check
+                text        : qsTr("Yes")
+                onClicked : {
+                    currentIndex=1
+                    root.confirmed()
+                }
+            }
+        }
+    }
+
+
+    Column {
+        Rectangle { color  : "transparent";  width  : Style.main.dummy; height : (root.height-answ.height)/2 }
+        AccessibleText {
+            id: answ
+            anchors.horizontalCenter: parent.horizontalCenter
+            color: Style.dialog.text
+            font {
+                pointSize : Style.dialog.fontSize * Style.pt
+                bold      : true
+            }
+            width: 3*parent.width/4
+            horizontalAlignment: Text.AlignHCenter
+            text : qsTr("Waiting...", "in general this displays between screens when processing data takes a long time")
+            wrapMode: Text.Wrap
+        }
+    }
+
+
+    states : [
+        State {
+            name: "quit"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Close ImportExport", "quits the application")
+                question     : qsTr("Are you sure you want to close the ImportExport?", "asked when user tries to quit the application")
+                note         : ""
+                answer       : qsTr("Closing ImportExport...", "displayed when user is quitting application")
+            }
+        },
+        State {
+            name: "logout"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : qsTr("Logout", "title of page that displays during account logout")
+                question     : ""
+                note         : ""
+                answer       : qsTr("Logging out...", "displays during account logout")
+            }
+        },
+        State {
+            name: "deleteUser"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Delete account", "title of page that displays during account deletion")
+                question     : qsTr("Are you sure you want to remove this account?", "displays during account deletion")
+                note         : ""
+                answer       : qsTr("Deleting ...", "displays during account deletion")
+            }
+        },
+        State {
+            name: "clearChain"
+            PropertyChanges {
+                target       : root
+                currentIndex : 0
+                title        : qsTr("Clear keychain", "title of page that displays during keychain clearing")
+                question     : qsTr("Are you sure you want to clear your keychain?", "displays during keychain clearing")
+                note         : qsTr("This will remove all accounts that you have added to the Import-Export app.", "displays during keychain clearing")
+                answer       : qsTr("Clearing the keychain ...", "displays during keychain clearing")
+            }
+        },
+        State {
+            name: "clearCache"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : qsTr("Clear cache", "title of page that displays during cache clearing")
+                question     : qsTr("Are you sure you want to clear your local cache?", "displays during cache clearing")
+                note         : qsTr("This will delete all of your stored preferences.", "displays during cache clearing")
+                answer       : qsTr("Clearing the cache ...", "displays during cache clearing")
+            }
+        },
+        State {
+            name: "checkUpdates"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : ""
+                question     : ""
+                note         : ""
+                answer       : qsTr("Checking for updates ...", "displays if user clicks the Check for Updates button in the Help tab")
+            }
+        },
+        State {
+            name: "internetCheck"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                title        : ""
+                question     : ""
+                note         : ""
+                answer       : qsTr("Contacting server...", "displays if user clicks the Check for Updates button in the Help tab")
+            }
+        },
+        State {
+            name: "addressmode"
+            PropertyChanges {
+                target: root
+                currentIndex : 0
+                title        : ""
+                question     : qsTr("Do you want to continue?", "asked when the user changes between split and combined address mode")
+                note         : qsTr("Changing between split and combined address mode will require you to delete your account(s) from your email client and begin the setup process from scratch.", "displayed when the user changes between split and combined address mode")
+                answer       : qsTr("Configuring address mode for ", "displayed when the user changes between split and combined address mode") + root.input
+            }
+        },
+        State {
+            name: "toggleAutoStart"
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                question     : ""
+                note         : ""
+                title        : ""
+                answer       : {
+                    var msgTurnOn = qsTr("Turning on automatic start of ImportExport...", "when the automatic start feature is selected")
+                    var msgTurnOff = qsTr("Turning off automatic start of ImportExport...", "when the automatic start feature is deselected")
+                    return go.isAutoStart==0 ? msgTurnOff  :  msgTurnOn
+                }
+            }
+        },
+        State {
+            name: "undef";
+            PropertyChanges {
+                target: root
+                currentIndex : 1
+                question     : ""
+                note         : ""
+                title        : ""
+                answer       : ""
+            }
+        }
+    ]
+
+
+    Shortcut {
+        sequence: StandardKey.Cancel
+        onActivated: root.hide()
+    }
+
+    Shortcut {
+        sequence: "Enter"
+        onActivated: root.confirmed()
+    }
+
+    onHide: {
+        checkBoxWrapper.isChecked = false
+        state = "undef"
+    }
+
+    onShow: {
+        // hide all other dialogs
+        winMain.dialogAddUser     .visible = false
+        winMain.dialogCredits     .visible = false
+        //winMain.dialogVersionInfo .visible = false
+        // dialogFirstStart should reappear again after closing global
+        root.visible = true
+    }
+
+
+
+    onConfirmed : {
+        if (state == "quit" || state == "instance exists" ) {
+            timer.interval = 1000
+        } else {
+            timer.interval = 300
+        }
+        answ.forceActiveFocus()
+        timer.start()
+    }
+
+    Connections {
+        target: timer
+        onTriggered: {
+            if ( state == "addressmode"     ) { go.switchAddressMode   (input) }
+            if ( state == "clearChain"      ) { go.clearKeychain       ()      }
+            if ( state == "clearCache"      ) { go.clearCache          ()      }
+            if ( state == "deleteUser"      ) { go.deleteAccount       (input, checkBoxWrapper.isChecked) }
+            if ( state == "logout"          ) { go.logoutAccount       (input) }
+            if ( state == "toggleAutoStart" ) { go.toggleAutoStart     ()      }
+            if ( state == "quit"            ) { Qt.quit                ()      }
+            if ( state == "instance exists" ) { Qt.quit                ()      }
+            if ( state == "checkUpdates"    ) { go.runCheckVersion     (true)  }
+        }
+    }
+
+    Keys.onPressed: {
+        if (event.key == Qt.Key_Enter) {
+            root.confirmed()
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/ExportStructure.qml

@@ -0,0 +1,149 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of export folders / labels
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color     : Style.exporting.background
+    radius    : Style.exporting.boxRadius
+    border {
+        color : Style.exporting.line
+        width : Style.dialog.borderInput
+    }
+    property bool hasItems: true
+
+
+    Text { // placeholder
+        visible: !root.hasItems
+        anchors.centerIn: parent
+        color: Style.main.textDisabled
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+        }
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        text: qsTr("No emails found for this address.","todo")
+    }
+
+
+    property string title  : ""
+
+    TextMetrics {
+        id: titleMetrics
+        text: root.title
+        elide: Qt.ElideMiddle
+        elideWidth: root.width - 4*Style.exporting.leftMargin
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: true
+        }
+    }
+
+    Rectangle {
+        id: header
+        anchors {
+            top: root.top
+            left: root.left
+        }
+        width  : root.width
+        height : Style.dialog.fontSize*3
+        color  : Style.transparent
+        Rectangle {
+            anchors.bottom: parent.bottom
+            color  : Style.exporting.line
+            height : Style.dialog.borderInput
+            width  : parent.width
+        }
+
+        Text {
+            anchors {
+                left           : parent.left
+                leftMargin     : 2*Style.exporting.leftMargin
+                verticalCenter : parent.verticalCenter
+            }
+            color: Style.dialog.text
+            font: titleMetrics.font
+            text: titleMetrics.elidedText
+        }
+    }
+
+
+    ListView {
+        id: listview
+        clip           : true
+        orientation    : ListView.Vertical
+        boundsBehavior : Flickable.StopAtBounds
+        model          : transferRules
+        cacheBuffer    : 10000
+
+        anchors {
+            left    : root.left
+            right   : root.right
+            bottom  : root.bottom
+            top     : header.bottom
+            margins : Style.dialog.borderInput
+        }
+
+        ScrollBar.vertical: ScrollBar {
+            /*
+             policy: ScrollBar.AsNeeded
+             background : Rectangle {
+                 color  : Style.exporting.sliderBackground
+                 radius : Style.exporting.boxRadius
+             }
+             contentItem : Rectangle {
+                 color         : Style.exporting.sliderForeground
+                 radius        : Style.exporting.boxRadius
+                 implicitWidth : Style.main.rightMargin / 3
+             }
+             */
+            anchors {
+                right: parent.right
+                rightMargin: Style.main.rightMargin/4
+            }
+            width: Style.main.rightMargin/3
+            Accessible.ignored: true
+        }
+
+        delegate: FolderRowButton {
+            property variant modelData: model
+            width      : root.width - 5*root.border.width
+            type       : modelData.type
+            folderIconColor  : modelData.iconColor
+            title      : modelData.name
+            isSelected : modelData.isActive
+            onClicked  : {
+                //console.log("Clicked", folderId, isSelected)
+                transferRules.setIsRuleActive(modelData.mboxID,!model.isActive)
+            }
+        }
+
+        section.property: "type"
+        section.delegate: FolderRowButton {
+            isSection  : true
+            width      : root.width - 5*root.border.width
+            title      : gui.folderTypeTitle(section)
+            isSelected : section == gui.enums.folderTypeLabel ? transferRules.isLabelGroupSelected : transferRules.isFolderGroupSelected
+            onClicked  : transferRules.setIsGroupActive(section,!isSelected)
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/FilterStructure.qml

@@ -0,0 +1,55 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Filter only selected folders or labels
+import QtQuick 2.8
+import QtQml.Models 2.2
+
+
+DelegateModel {
+    id: root
+    model         : structurePM
+    //filterOnGroup : root.folderType
+    //delegate      : root.delegate
+    groups        : [
+        DelegateModelGroup {name: gui.enums.folderTypeFolder ; includeByDefault: false},
+        DelegateModelGroup {name: gui.enums.folderTypeLabel  ; includeByDefault: false}
+    ]
+
+    function updateFilter() {
+        //console.log("FilterModelDelegate::UpdateFilter")
+        // filter
+        var rowCount = root.items.count;
+        for (var iItem = 0; iItem < rowCount; iItem++) {
+            var entry = root.items.get(iItem);
+            entry.inLabel = (
+                root.filterOnGroup        == gui.enums.folderTypeLabel &&
+                entry.model.folderType == gui.enums.folderTypeLabel
+            )
+            entry.inFolder = (
+                root.filterOnGroup        == gui.enums.folderTypeFolder &&
+                entry.model.folderType != gui.enums.folderTypeLabel
+            )
+            /*
+             if (entry.inFolder && entry.model.folderId == selectedIDs) {
+                 view.currentIndex = iItem
+             }
+             */
+            //console.log("::::update filter:::::", iItem, entry.model.folderName, entry.inFolder, entry.inLabel)
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/FolderRowButton.qml

@@ -0,0 +1,99 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Checkbox row for folder selection
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+AccessibleButton {
+    id: root
+
+    property bool   isSection  : false
+    property bool   isSelected : false
+    property string title      : "N/A"
+    property string type       : ""
+    property string folderIconColor  : Style.main.textBlue
+
+    height    : Style.exporting.rowHeight
+    padding   : 0.0
+    anchors {
+        horizontalCenter: parent.horizontalCenter
+    }
+
+    background: Rectangle {
+        color: isSection ? Style.exporting.background : Style.exporting.rowBackground
+        Rectangle { // line
+            anchors.bottom : parent.bottom
+            height         : Style.dialog.borderInput
+            width          : parent.width
+            color          : Style.exporting.background
+        }
+    }
+
+    contentItem: Rectangle {
+        color: "transparent"
+        id: content
+        Text {
+            id: checkbox
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : content.left
+                leftMargin     : Style.exporting.leftMargin * (root.type == gui.enums.folderTypeSystem   ? 1.0 : 2.0)
+            }
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+            color : isSelected ? Style.main.text : Style.main.textInactive
+            text  : (isSelected ? Style.fa.check_square_o : Style.fa.square_o )
+        }
+
+        Text { // icon
+            id: folderIcon
+            visible: !isSection
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : checkbox.left
+                leftMargin     : Style.dialog.fontSize + Style.exporting.leftMargin
+            }
+            color : root.type=="" ? Style.main.textBlue : root.folderIconColor
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+            text  : {
+                return gui.folderIcon(root.title.toLowerCase(), root.type)
+            }
+        }
+
+        Text {
+            text: root.title
+            anchors {
+                verticalCenter : parent.verticalCenter
+                left           : isSection ? checkbox.left : folderIcon.left
+                leftMargin     : Style.dialog.fontSize + Style.exporting.leftMargin
+            }
+            font {
+                pointSize : Style.dialog.fontSize * Style.pt
+                bold: isSection
+            }
+            color: Style.exporting.text
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/HelpView.qml

@@ -0,0 +1,143 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List the settings
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+
+    // must have wrapper
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: parent.width
+        height: parent.height
+        color: Style.main.background
+
+        // content
+        Column {
+            anchors.horizontalCenter : parent.horizontalCenter
+
+
+            ButtonIconText {
+                id: manual
+                anchors.left: parent.left
+                text: qsTr("Setup Guide")
+                leftIcon.text  : Style.fa.book
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: go.openManual()
+            }
+
+            ButtonIconText {
+                id: updates
+                anchors.left: parent.left
+                text: qsTr("Check for Updates")
+                leftIcon.text  : Style.fa.refresh
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: {
+                    dialogGlobal.state="checkUpdates"
+                    dialogGlobal.show()
+                    dialogGlobal.confirmed()
+                }
+            }
+
+            Rectangle {
+                anchors.horizontalCenter : parent.horizontalCenter
+                height: Math.max (
+                    aboutText.height +
+                    Style.main.fontSize,
+                    wrapper.height - (
+                        2*manual.height +
+                        creditsLink.height +
+                        Style.main.fontSize
+                    )
+                )
+                width: wrapper.width
+                color : Style.transparent
+                AccessibleText {
+                    id: aboutText
+                    anchors {
+                        bottom: parent.bottom
+                        horizontalCenter: parent.horizontalCenter
+                    }
+                    color: Style.main.textDisabled
+                    horizontalAlignment: Qt.AlignHCenter
+                    font.pointSize :  Style.main.fontSize * Style.pt
+                    text: "ProtonMail Import-Export app Version "+go.getBackendVersion()+"\n© 2020 Proton Technologies AG"
+                }
+            }
+
+            Row {
+                anchors.horizontalCenter : parent.horizontalCenter
+                spacing : Style.main.dummy
+
+                Text {
+                    id: creditsLink
+                    text  : qsTr("Credits", "link to click on to view list of credited libraries")
+                    color : Style.main.textDisabled
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    font.underline: true
+                    MouseArea {
+                        anchors.fill: parent
+                        onClicked : {
+                            winMain.dialogCredits.show()
+                        }
+                        cursorShape: Qt.PointingHandCursor
+                    }
+                }
+
+                Text {
+                    id: licenseFile
+                    text  : qsTr("License", "link to click on to open license file")
+                    color : Style.main.textDisabled
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    font.underline: true
+                    MouseArea {
+                        anchors.fill: parent
+                        onClicked : {
+                        go.openLicenseFile()
+                        }
+                        cursorShape: Qt.PointingHandCursor
+                    }
+                }
+
+                Text {
+                    id: releaseNotes
+                    text  : qsTr("Release notes", "link to click on to view release notes for this version of the app")
+                    color : Style.main.textDisabled
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    font.underline: true
+                    MouseArea {
+                        anchors.fill: parent
+                        onClicked : {
+                            go.getLocalVersionInfo()
+                            winMain.dialogVersionInfo.show()
+                        }
+                        cursorShape: Qt.PointingHandCursor
+                    }
+                }
+            }
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/IEStyle.qml

@@ -0,0 +1,106 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Adjust Bridge Style
+
+import QtQuick 2.8
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+Item {
+    Component.onCompleted : {
+        //Style.refdpi = go.goos == "darwin" ? 86.0 : 96.0
+        Style.pt     = go.goos == "darwin" ? 93/Style.dpi : 80/Style.dpi
+
+        Style.main.background   = "#fff"
+        Style.main.text         = "#505061"
+        Style.main.textInactive = "#686876"
+        Style.main.line         = "#dddddd"
+        Style.main.width        = 884 * Style.px
+        Style.main.height       = 422 * Style.px
+        Style.main.leftMargin   = 25 * Style.px
+        Style.main.rightMargin  = 25 * Style.px
+
+        Style.title.background = Style.main.text
+        Style.title.text       = Style.main.background
+
+        Style.tabbar.background    = "#3D3A47"
+        Style.tabbar.rightButton   = "add account"
+        Style.tabbar.spacingButton = 45*Style.px
+
+        Style.accounts.backgroundExpanded = "#fafafa"
+        Style.accounts.backgroundAddrRow  = "#fff"
+        Style.accounts.leftMargin2        = Style.main.width/2
+        Style.accounts.leftMargin3        = 5.5*Style.main.width/8
+
+
+        Style.dialog.background   = "#fff"
+        Style.dialog.text         = Style.main.text
+        Style.dialog.line         = "#e2e2e2"
+        Style.dialog.fontSize     = 12 * Style.px
+        Style.dialog.heightInput  = 2.2*Style.dialog.fontSize
+        Style.dialog.heightButton = Style.dialog.heightInput
+        Style.dialog.borderInput  = 1 * Style.px
+
+        Style.bubble.background     = "#595966"
+        Style.bubble.paneBackground = "#454553"
+        Style.bubble.text           = "#fff"
+        Style.bubble.width          = 310 * Style.px
+        Style.bubble.widthPane      = 36  * Style.px
+        Style.bubble.iconSize       = 14  * Style.px
+
+
+        // colors:
+        // text: #515061
+        // tick: #686876
+        // blue icon: #9396cc
+        // row bck: #f8f8f9
+        // line: #ddddde or #e2e2e2
+        //
+        // slider bg: #e6e6e6
+        // slider fg: #515061
+        // info icon: #c3c3c8
+        // input border: #ebebeb
+        //
+        // bubble color: #595966
+        // bubble pane: #454553
+        // bubble text: #fff
+        //
+        // indent folder
+        //
+        // Dimensions:
+        // full width: 882px
+        // leftMargin: 25px
+        // rightMargin: 25px
+        // rightMargin: 25px
+        // middleSeparator: 69px
+        // width folders: 416px or (width - separators) /2
+        // width output: 346px or (width - separators) /2
+        //
+        // height from top to input begin: 78px
+        // heightSeparator: 27px
+        // height folder input: 26px
+        //
+        // buble width: 309px
+        // buble left pane icon: 14px
+        // buble left pane width: 36px or (2.5 icon width)
+        // buble height: 46px
+        // buble arrow height: 12px
+        // buble arrow width: 14px
+        // buble radius: 3-4px
+    }
+}

internal/frontend/qml/ImportExportUI/ImportDelegate.qml

@@ -0,0 +1,154 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color: Style.importing.rowBackground
+    height: 40
+    width: 300
+    property real leftMargin1 : folderIcon.x - root.x
+    property real leftMargin2 : selectFolder.x - root.x
+    property real nameWidth : {
+        var available = root.width
+        available -= rowPlacement.children.length * rowPlacement.spacing  // spacing between places
+        available -= 3*rowPlacement.leftPadding // left, and 2x right
+        available -= folderIcon.width
+        available -= arrowIcon.width
+        available -= dateRangeMenu.width
+        return available/3.3 // source folder label, target folder menu, target labels menu, and 0.3x label list
+    }
+    property real iconWidth : nameWidth*0.3
+
+    property bool isSourceSelected: isActive
+    property string lastTargetFolder: "6" // Archive
+    property string lastTargetLabels: "" // no flag by default
+
+    property string sourceID   : mboxID
+    property string sourceName : name
+
+    Rectangle {
+        id: line
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            bottom : parent.bottom
+        }
+        height : Style.main.border * 2
+        color  : Style.importing.rowLine
+    }
+
+    Row {
+        id: rowPlacement
+        spacing: Style.dialog.spacing
+        leftPadding: Style.dialog.spacing*2
+        anchors.verticalCenter : parent.verticalCenter
+
+        CheckBoxLabel {
+            id: checkBox
+            anchors.verticalCenter : parent.verticalCenter
+            checked: root.isSourceSelected
+
+            onClicked: root.toggleImport()
+        }
+
+        Text {
+            id: folderIcon
+            text : gui.folderIcon(root.sourceName, gui.enums.folderTypeFolder)
+            anchors.verticalCenter : parent.verticalCenter
+            color: root.isSourceSelected ? Style.main.text : Style.main.textDisabled
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            text : root.sourceName
+            width: nameWidth
+            elide: Text.ElideRight
+            anchors.verticalCenter : parent.verticalCenter
+            color: folderIcon.color
+            font.pointSize : Style.dialog.fontSize * Style.pt
+        }
+
+        Text {
+            id: arrowIcon
+            text : Style.fa.arrow_right
+            anchors.verticalCenter : parent.verticalCenter
+            color: Style.main.text
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        SelectFolderMenu {
+            id: selectFolder
+            sourceID: root.sourceID
+            targets: transferRules.targetFolders(root.sourceID)
+            width: nameWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+            onDoNotImport: root.toggleImport()
+            onImportToFolder: root.importToFolder(newTargetID)
+        }
+
+        SelectLabelsMenu {
+            sourceID: root.sourceID
+            targets: transferRules.targetLabels(root.sourceID)
+            width: nameWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+            onAddTargetLabel: { transferRules.addTargetID(sourceID, newTargetID) }
+            onRemoveTargetLabel: { transferRules.removeTargetID(sourceID, newTargetID) }
+        }
+
+        LabelIconList {
+            colorList: labelColors=="" ? [] : labelColors.split(";")
+            width: iconWidth
+            anchors.verticalCenter : parent.verticalCenter
+            enabled: root.isSourceSelected
+        }
+
+        DateRangeMenu {
+            id: dateRangeMenu
+            sourceID: root.sourceID
+            sourceFromDate: fromDate
+            sourceToDate: toDate
+
+            enabled: root.isSourceSelected
+            anchors.verticalCenter : parent.verticalCenter
+
+            Component.onCompleted : dateRangeMenu.updateRange()
+        }
+    }
+
+
+    function importToFolder(newTargetID) {
+        transferRules.addTargetID(root.sourceID,newTargetID)
+    }
+
+    function toggleImport() {
+        transferRules.setIsRuleActive(root.sourceID, !root.isSourceSelected)
+    }
+}

internal/frontend/qml/ImportExportUI/ImportReport.qml

@@ -0,0 +1,216 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Import report modal
+import QtQuick 2.11
+import QtQuick.Controls 2.4
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    color: "#aa101021"
+    visible: false
+
+    MouseArea { // disable bellow
+        anchors.fill: root
+        hoverEnabled: true
+    }
+
+    Rectangle {
+        id:background
+        color: Style.main.background
+        anchors {
+            fill         : root
+            topMargin    : Style.main.rightMargin
+            leftMargin   : 2*Style.main.rightMargin
+            rightMargin  : 2*Style.main.rightMargin
+            bottomMargin : 2.5*Style.main.rightMargin
+        }
+
+        ClickIconText {
+            anchors {
+                top     : parent.top
+                right   : parent.right
+                margins : .5* Style.main.rightMargin
+            }
+            iconText  : Style.fa.times
+            text      : ""
+            textColor : Style.main.textBlue
+            onClicked : root.hide()
+            Accessible.description : qsTr("Close dialog %1", "Click to exit modal.").arg(title.text)
+        }
+
+        Text {
+            id: title
+            text : qsTr("List of errors")
+            font {
+                pointSize: Style.dialog.titleSize * Style.pt
+            }
+            anchors {
+                top              : parent.top
+                topMargin        : 0.5*Style.main.rightMargin
+                horizontalCenter : parent.horizontalCenter
+            }
+        }
+
+        ListView {
+            id: errorView
+            anchors {
+                left    : parent.left
+                right   : parent.right
+                top     : title.bottom
+                bottom  : detailBtn.top
+                margins : Style.main.rightMargin
+            }
+
+            clip               : true
+            flickableDirection : Flickable.HorizontalAndVerticalFlick
+            contentWidth       : errorView.rWall
+            boundsBehavior     : Flickable.StopAtBounds
+
+            ScrollBar.vertical: ScrollBar {
+                anchors {
+                    right        : parent.right
+                    top          : parent.top
+                    rightMargin  : Style.main.rightMargin/4
+                    topMargin    : Style.main.rightMargin
+                }
+                width: Style.main.rightMargin/3
+                Accessible.ignored: true
+            }
+            ScrollBar.horizontal: ScrollBar {
+                anchors {
+                    bottom       : parent.bottom
+                    right        : parent.right
+                    bottomMargin : Style.main.rightMargin/4
+                    rightMargin  : Style.main.rightMargin
+                }
+                height: Style.main.rightMargin/3
+                Accessible.ignored: true
+            }
+
+
+
+            property real rW1   : 150 *Style.px
+            property real rW2   : 150 *Style.px
+            property real rW3   : 100 *Style.px
+            property real rW4   : 150 *Style.px
+            property real rW5   : 550 *Style.px
+            property real rWall : errorView.rW1+errorView.rW2+errorView.rW3+errorView.rW4+errorView.rW5
+            property real pH    : .5*Style.main.rightMargin
+
+            model    : errorList
+            delegate : Rectangle {
+                width  : Math.max(errorView.width, row.width)
+                height : row.height
+
+                Row {
+                    id: row
+
+                    spacing       : errorView.pH
+                    leftPadding   : errorView.pH
+                    rightPadding  : errorView.pH
+                    topPadding    : errorView.pH
+                    bottomPadding : errorView.pH
+
+                    ImportReportCell { width : errorView.rW1; text : mailSubject  }
+                    ImportReportCell { width : errorView.rW2; text : mailDate     }
+                    ImportReportCell { width : errorView.rW3; text : inputFolder  }
+                    ImportReportCell { width : errorView.rW4; text : mailFrom     }
+                    ImportReportCell { width : errorView.rW5; text : errorMessage }
+                }
+
+                Rectangle {
+                    color          : Style.main.line
+                    height         : .8*Style.px
+                    width          : parent.width
+                    anchors.left   : parent.left
+                    anchors.bottom : parent.bottom
+                }
+            }
+
+            headerPositioning: ListView.OverlayHeader
+            header: Rectangle {
+                height : viewHeader.height
+                width  : Math.max(errorView.width, viewHeader.width)
+                color  : Style.accounts.backgroundExpanded
+                z      : 2
+
+                Row {
+                    id: viewHeader
+
+                    spacing       : errorView.pH
+                    leftPadding   : errorView.pH
+                    rightPadding  : errorView.pH
+                    topPadding    : .5*errorView.pH
+                    bottomPadding : .5*errorView.pH
+
+                    ImportReportCell { width : errorView.rW1 ; text : qsTr ( "SUBJECT"   ); isHeader: true }
+                    ImportReportCell { width : errorView.rW2 ; text : qsTr ( "DATE/TIME" ); isHeader: true }
+                    ImportReportCell { width : errorView.rW3 ; text : qsTr ( "FOLDER"    ); isHeader: true }
+                    ImportReportCell { width : errorView.rW4 ; text : qsTr ( "FROM"      ); isHeader: true }
+                    ImportReportCell { width : errorView.rW5 ; text : qsTr ( "ERROR"     ); isHeader: true }
+                }
+
+                Rectangle {
+                    color          : Style.main.line
+                    height         : .8*Style.px
+                    width          : parent.width
+                    anchors.left   : parent.left
+                    anchors.bottom : parent.bottom
+                }
+            }
+        }
+
+        Rectangle {
+            anchors{
+                fill    : errorView
+                margins : -radius
+            }
+            radius : 2* Style.px
+            color  : Style.transparent
+            border {
+                width : Style.px
+                color : Style.main.line
+            }
+        }
+
+        ButtonRounded {
+            id: detailBtn
+            fa_icon    : Style.fa.file_text
+            text       : qsTr("Detailed file")
+            color_main : Style.dialog.textBlue
+            onClicked  : go.importLogFileName == "" ? go.openLogs() : go.openReport()
+
+            anchors {
+                bottom           : parent.bottom
+                bottomMargin     : 0.5*Style.main.rightMargin
+                horizontalCenter : parent.horizontalCenter
+            }
+        }
+    }
+
+
+    function show() {
+        root.visible = true
+    }
+
+    function hide() {
+        root.visible = false
+    }
+}

internal/frontend/qml/ImportExportUI/ImportReportCell.qml

@@ -0,0 +1,66 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Import report modal
+import QtQuick 2.11
+import QtQuick.Controls 2.4
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Rectangle {
+    id: root
+
+    property alias text      : cellText.text
+    property bool  isHeader  : false
+    property bool  isHovered : false
+    property bool  isWider   : cellText.contentWidth > root.width
+
+    width  : 20*Style.px
+    height : cellText.height
+    z      : root.isHovered ? 3 : 1
+    color  : Style.transparent
+
+    Rectangle {
+        anchors {
+            fill    : cellText
+            margins : -2*Style.px
+        }
+        color : root.isWider ? Style.main.background : Style.transparent
+        border {
+            color : root.isWider ? Style.main.textDisabled : Style.transparent
+            width : Style.px
+        }
+    }
+
+    Text {
+        id: cellText
+        color : root.isHeader  ? Style.main.textDisabled : Style.main.text
+        elide : root.isHovered ? Text.ElideNone          : Text.ElideRight
+        width : root.isHovered ? cellText.contentWidth   : root.width
+        font {
+            pointSize : Style.main.textSize * Style.pt
+        }
+    }
+
+    MouseArea {
+        anchors.fill : root
+        hoverEnabled : !root.isHeader
+        onEntered    : { root.isHovered = true  }
+        onExited     : { root.isHovered = false }
+    }
+}

internal/frontend/qml/ImportExportUI/ImportSourceButton.qml

@@ -0,0 +1,89 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// Export dialog
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+
+Button {
+    id: root
+
+    width  : 200
+    height : icon.height + 4*tag.height
+    scale  : pressed ? 0.95 : 1.0
+
+    property string iconText : Style.fa.ban
+
+    background: Rectangle { color: "transparent" }
+
+    contentItem: Rectangle {
+        id: wrapper
+        color: "transparent"
+
+        Image {
+            id: icon
+            anchors {
+                bottom           : wrapper.bottom
+                bottomMargin     : tag.height*2.5
+                horizontalCenter : wrapper.horizontalCenter
+            }
+            fillMode : Image.PreserveAspectFit
+            width    : Style.main.fontSize * 7
+            mipmap   : true
+            source   : "images/"+iconText+".png"
+
+        }
+
+        Row {
+            spacing: Style.dialog.spacing
+            anchors {
+                bottom           : wrapper.bottom
+                horizontalCenter : wrapper.horizontalCenter
+            }
+
+            Text {
+                id: tag
+
+                text  : Style.fa.plus_circle
+                color : Qt.lighter( Style.dialog.textBlue, root.enabled ? 1.0 : 1.5)
+
+                font {
+                    family    : Style.fontawesome.name
+                    pointSize : Style.main.fontSize * Style.pt * 1.2
+                }
+            }
+
+            Text {
+                text  : root.text
+                color: tag.color
+
+                font {
+                    family    : tag.font.family
+                    pointSize : tag.font.pointSize
+                    weight    : Font.DemiBold
+                    underline : true
+                }
+            }
+        }
+    }
+}
+
+

internal/frontend/qml/ImportExportUI/ImportStructure.qml

@@ -0,0 +1,148 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    property string titleFrom
+    property string titleTo
+    property bool   hasItems: true
+
+    color : Style.transparent
+
+    Rectangle {
+        anchors.fill: root
+        radius : Style.dialog.radiusButton
+        color : Style.transparent
+        border {
+            color : Style.main.line
+            width : 1.5*Style.dialog.borderInput
+        }
+
+
+        Text { // placeholder
+            visible: !root.hasItems
+            anchors.centerIn: parent
+            color: Style.main.textDisabled
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+            }
+            horizontalAlignment: Text.AlignHCenter
+            verticalAlignment: Text.AlignVCenter
+            text: qsTr("No emails found for this source.","todo")
+        }
+    }
+
+    anchors {
+        left   : parent.left
+        right  : parent.right
+        top    : parent.top
+        bottom : parent.bottom
+
+        leftMargin   : Style.main.leftMargin
+        rightMargin  : Style.main.leftMargin
+        topMargin    : Style.main.topMargin
+        bottomMargin : Style.main.bottomMargin
+    }
+
+    ListView {
+        id: listview
+        clip           : true
+        orientation    : ListView.Vertical
+        boundsBehavior : Flickable.StopAtBounds
+        model          : transferRules
+        cacheBuffer    : 10000
+        delegate       : ImportDelegate {
+            width: root.width
+        }
+
+        anchors {
+            top: titleBox.bottom
+            bottom: root.bottom
+            left: root.left
+            right: root.right
+            margins : Style.dialog.borderInput
+            bottomMargin: Style.dialog.radiusButton
+        }
+
+        ScrollBar.vertical: ScrollBar {
+            anchors {
+                right: parent.right
+                rightMargin: Style.main.rightMargin/4
+            }
+            width: Style.main.rightMargin/3
+            Accessible.ignored: true
+        }
+    }
+
+    Rectangle {
+        id: titleBox
+        anchors {
+            top: parent.top
+            left: parent.left
+            right: parent.right
+        }
+        height: Style.main.fontSize *2
+        color : Style.transparent
+
+        Text {
+            id: textTitleFrom
+            anchors {
+                left: parent.left
+                verticalCenter: parent.verticalCenter
+                leftMargin: {
+                    if (listview.currentItem === null) return 0
+                    else return listview.currentItem.leftMargin1
+                }
+            }
+            text: "<b>"+qsTr("From:")+"</b> " + root.titleFrom
+            color: Style.main.text
+            width: listview.currentItem === null  ? 0 : (listview.currentItem.leftMargin2 - listview.currentItem.leftMargin1 - Style.dialog.spacing)
+            elide: Text.ElideMiddle
+        }
+
+        Text {
+            id: textTitleTo
+            anchors {
+                left: parent.left
+                verticalCenter: parent.verticalCenter
+                leftMargin: {
+                    if (listview.currentIndex<0) return root.width/3
+                    else return listview.currentItem.leftMargin2
+                }
+            }
+            text: "<b>"+qsTr("To:")+"</b> " + root.titleTo
+            color: Style.main.text
+        }
+    }
+
+    Rectangle {
+        id: line
+        anchors {
+            left  : titleBox.left
+            right : titleBox.right
+            top   : titleBox.bottom
+        }
+        height: Style.dialog.borderInput
+        color: Style.main.line
+    }
+}

internal/frontend/qml/ImportExportUI/InlineDateRange.qml

@@ -0,0 +1,128 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Row {
+    id: dateRange
+
+    property var   structure : transferRules
+    property string sourceID : "-1"
+
+    property alias allDates      : allDatesBox.checked
+    property alias inputDateFrom : inputDateFrom
+    property alias inputDateTo   : inputDateTo
+
+    property alias labelWidth: label.width
+
+    function getRange() {common.getRange()}
+    function applyRange() {common.applyRange()}
+
+    DateRangeFunctions {id:common}
+
+    spacing: Style.dialog.spacing*2
+
+    Text {
+        id: label
+        anchors.verticalCenter: parent.verticalCenter
+        text : qsTr("Date range")
+        font {
+            bold: true
+            pointSize: Style.main.fontSize * Style.pt
+        }
+        color: Style.main.text
+    }
+
+    DateInput {
+        id: inputDateFrom
+        label: ""
+        anchors.verticalCenter: parent.verticalCenter
+        currentDate: new Date(0) // default epoch start
+        maxDate: inputDateTo.currentDate
+    }
+
+    Text {
+        text : Style.fa.arrows_h
+        anchors.verticalCenter: parent.verticalCenter
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        color: Style.main.text
+        font.family: Style.fontawesome.name
+    }
+
+    DateInput {
+        id: inputDateTo
+        label: ""
+        anchors.verticalCenter: parent.verticalCenter
+        currentDate: new Date() // default now
+        minDate: inputDateFrom.currentDate
+        isMaxDateToday: true
+    }
+
+    CheckBoxLabel {
+        id: allDatesBox
+        text                   : qsTr("All dates")
+        anchors.verticalCenter : parent.verticalCenter
+        checkedSymbol          : Style.fa.toggle_on
+        uncheckedSymbol        : Style.fa.toggle_off
+        uncheckedColor         : Style.main.textDisabled
+        symbolPointSize        : Style.dialog.iconSize * Style.pt * 1.1
+        spacing                : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: allDatesBox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: allDatesBox.symbolPointSize
+            }
+        }
+
+
+        Rectangle {
+            color: allDatesBox.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: allDatesBox.left
+                verticalCenter: allDatesBox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/InlineLabelSelect.qml

@@ -0,0 +1,225 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// input for date range
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+
+Row {
+    id: root
+    spacing: Style.dialog.spacing
+
+    property alias labelWidth : label.width
+
+    property string labelName     : ""
+    property string labelColor    : ""
+    property alias  labelSelected : masterLabelCheckbox.checked
+
+    Text {
+        id: label
+        text : qsTr("Add import label")
+        font {
+            bold: true
+            pointSize: Style.main.fontSize * Style.pt
+        }
+        color: Style.main.text
+        anchors.verticalCenter: parent.verticalCenter
+    }
+
+    InfoToolTip {
+        info: qsTr( "When master import label is selected then all imported emails will have this label.", "Tooltip text for master import label")
+        anchors.verticalCenter: parent.verticalCenter
+    }
+
+    CheckBoxLabel {
+        id: masterLabelCheckbox
+        text                   : ""
+        anchors.verticalCenter : parent.verticalCenter
+        checkedSymbol          : Style.fa.toggle_on
+        uncheckedSymbol        : Style.fa.toggle_off
+        uncheckedColor         : Style.main.textDisabled
+        symbolPointSize        : Style.dialog.iconSize * Style.pt * 1.1
+        spacing                : Style.dialog.spacing*2
+
+        TextMetrics {
+            id: metrics
+            text: masterLabelCheckbox.checkedSymbol
+            font {
+                family: Style.fontawesome.name
+                pointSize: masterLabelCheckbox.symbolPointSize
+            }
+        }
+
+
+        Rectangle {
+            color: parent.checked ? dotBackground.color : Style.exporting.sliderBackground
+            width: metrics.width*0.9
+            height: metrics.height*0.6
+            radius: height/2
+            z: -1
+
+            anchors {
+                left: masterLabelCheckbox.left
+                verticalCenter: masterLabelCheckbox.verticalCenter
+                leftMargin: 0.05 * metrics.width
+            }
+
+            Rectangle {
+                id: dotBackground
+                color  : Style.exporting.background
+                height : parent.height
+                width  : height
+                radius : height/2
+                anchors {
+                    left           : parent.left
+                    verticalCenter : parent.verticalCenter
+                }
+
+            }
+        }
+    }
+
+    Rectangle {
+        // label
+        color  : Style.transparent
+        radius : Style.dialog.radiusButton
+        border {
+            color : Style.dialog.line
+            width : Style.dialog.borderInput
+        }
+        anchors.verticalCenter : parent.verticalCenter
+
+        scale: area.pressed ? 0.95 : 1
+
+        width: content.width
+        height: content.height
+
+
+        Row {
+            id: content
+
+            spacing   : Style.dialog.spacing
+            padding   : Style.dialog.spacing
+
+            anchors.verticalCenter: parent.verticalCenter
+
+            // label icon color
+            Text {
+                text: Style.fa.tag
+                color: root.labelSelected ? root.labelColor : Style.dialog.line
+                anchors.verticalCenter: parent.verticalCenter
+                font {
+                    family: Style.fontawesome.name
+                    pointSize: Style.main.fontSize * Style.pt
+                }
+            }
+
+            TextMetrics {
+                id:labelMetrics
+                text: root.labelName
+                elide: Text.ElideRight
+                elideWidth:gui.winMain.width*0.303
+
+                font {
+                    pointSize: Style.main.fontSize * Style.pt
+                }
+            }
+
+            // label text
+            Text {
+                text: labelMetrics.elidedText
+                color: root.labelSelected ? Style.dialog.text : Style.dialog.line
+                font: labelMetrics.font
+                anchors.verticalCenter: parent.verticalCenter
+            }
+
+            // edit icon
+            Text {
+                text: Style.fa.edit
+                color: root.labelSelected ? Style.main.textBlue : Style.dialog.line
+                anchors.verticalCenter: parent.verticalCenter
+                font {
+                    family: Style.fontawesome.name
+                    pointSize: Style.main.fontSize * Style.pt
+                }
+            }
+        }
+
+        MouseArea {
+            id: area
+            anchors.fill: parent
+            enabled: root.labelSelected
+            onClicked : {
+                if (!root.labelSelected) return
+                // NOTE: "createLater" is hack
+                winMain.popupFolderEdit.show(root.labelName, "createLater", root.labelColor, gui.enums.folderTypeLabel, "")
+            }
+        }
+    }
+
+    function reset(){
+        labelColor  = go.leastUsedColor()
+        labelName = qsTr("Imported", "default name of global label followed by date") + " " + gui.niceDateTime()
+        labelSelected=true
+    }
+
+    Connections {
+        target: winMain.popupFolderEdit
+
+        onEdited : {
+            if (newName!="") root.labelName = newName
+            if (newColor!="") root.labelColor = newColor
+        }
+    }
+
+
+    /*
+     SelectLabelsMenu {
+         id: labelMenu
+         width       : winMain.width/5
+         sourceID    : root.sourceID
+         selectedIDs : root.structure.getTargetLabelIDs(root.sourceID)
+         anchors.verticalCenter: parent.verticalCenter
+     }
+
+     LabelIconList {
+         id: iconList
+         selectedIDs : root.structure.getTargetLabelIDs(root.sourceID)
+         anchors.verticalCenter: parent.verticalCenter
+     }
+
+
+     Connections {
+         target: structureExternal
+         onDataChanged: {
+             iconList.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+             labelMenu.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+         }
+     }
+
+     Connections {
+         target: structurePM
+         onDataChanged:{
+             iconList.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+             labelMenu.selectedIDs = root.structure.getTargetLabelIDs(root.sourceID)
+         }
+     }
+     */
+}

internal/frontend/qml/ImportExportUI/LabelIconList.qml

@@ -0,0 +1,65 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of icons for selected folders
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import QtQml.Models 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Rectangle {
+    id: root
+    width: Style.main.fontSize * 2
+    height: metrics.height
+    property var colorList
+    color: "transparent"
+
+    DelegateModel {
+        id: selectedLabels
+        model     : colorList
+        delegate  : Text {
+            text  : metrics.text
+            font  : metrics.font
+            color : modelData
+        }
+    }
+
+    TextMetrics {
+        id: metrics
+        text: Style.fa.tag
+        font {
+            pointSize: Style.main.fontSize * Style.pt
+            family: Style.fontawesome.name
+        }
+    }
+
+    Row {
+        anchors.left : root.left
+        spacing : {
+            var n = Math.max(2,root.colorList.length)
+            var tagWidth = Math.max(1.0,metrics.width)
+            var space = Math.min(1*Style.px, (root.width - n*tagWidth)/(n-1)) // not more than 1px
+            space = Math.max(space,-tagWidth) // not less than tag width
+            return space
+        }
+
+        Repeater {
+            model: selectedLabels
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/MainWindow.qml

@@ -0,0 +1,475 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is main window
+
+import QtQuick 2.8
+import QtQuick.Window 2.2
+import QtQuick.Controls 2.1
+import QtQuick.Layouts 1.3
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+
+// Main Window
+Window {
+    id                               : root
+    property alias tabbar            : tabbar
+    property alias viewContent       : viewContent
+    property alias viewAccount       : viewAccount
+    property alias dialogAddUser     : dialogAddUser
+    property alias dialogGlobal      : dialogGlobal
+    property alias dialogCredits     : dialogCredits
+    property alias dialogVersionInfo : dialogVersionInfo
+    property alias dialogUpdate      : dialogUpdate
+    property alias popupMessage      : popupMessage
+    property alias popupFolderEdit   : popupFolderEdit
+    property alias updateState       : infoBar.state
+    property alias dialogExport      : dialogExport
+    property alias dialogImport      : dialogImport
+    property alias addAccountTip     : addAccountTip
+    property int   heightContent     : height-titleBar.height
+
+    property real   innerWindowBorder   : go.goos=="darwin" ? 0 : Style.main.border
+
+    // main window appearance
+    width  : Style.main.width
+    height : Style.main.height
+    flags  : go.goos=="darwin" ? Qt.Window : Qt.Window | Qt.FramelessWindowHint
+    color: go.goos=="windows" ? Style.main.background : Style.transparent
+    title: go.programTitle
+
+    minimumWidth  : Style.main.width
+    minimumHeight : Style.main.height
+
+    property bool isOutdateVersion : root.updateState == "forceUpgrade"
+
+    property bool activeContent :
+    !dialogAddUser     .visible &&
+    !dialogCredits     .visible &&
+    !dialogVersionInfo .visible &&
+    !dialogGlobal      .visible &&
+    !dialogUpdate      .visible &&
+    !dialogImport      .visible &&
+    !dialogExport      .visible &&
+    !popupFolderEdit   .visible &&
+    !popupMessage      .visible
+
+    Accessible.role: Accessible.Grouping
+    Accessible.description: qsTr("Window %1").arg(title)
+    Accessible.name: Accessible.description
+
+    WindowTitleBar {
+        id: titleBar
+        window: root
+        visible: go.goos!="darwin"
+    }
+
+    Rectangle {
+        anchors {
+            top   : titleBar.bottom
+            left  : parent.left
+            right : parent.right
+            bottom : parent.bottom
+        }
+        color: Style.title.background
+    }
+
+    InformationBar {
+        id: infoBar
+        anchors {
+            left  : parent.left
+            right : parent.right
+            top   : titleBar.bottom
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+    }
+
+    TabLabels  {
+        id: tabbar
+        currentIndex : 0
+        enabled: root.activeContent
+        anchors {
+            top   : infoBar.bottom
+            right : parent.right
+            left  : parent.left
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+        model: [
+            { "title" : qsTr("Import-Export" , "title of tab that shows account list"             ), "iconText": Style.fa.home      },
+            { "title" : qsTr("Settings"      , "title of tab that allows user to change settings" ), "iconText": Style.fa.cogs      },
+            { "title" : qsTr("Help"          , "title of tab that shows the help menu"            ), "iconText": Style.fa.life_ring }
+        ]
+    }
+
+    // Content of tabs
+    StackLayout  {
+        id: viewContent
+        enabled: root.activeContent
+        // dimensions
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            top    : tabbar.bottom
+            bottom : parent.bottom
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+            bottomMargin: innerWindowBorder
+        }
+        // attributes
+        currentIndex : { return root.tabbar.currentIndex}
+        clip         : true
+        // content
+        AccountView  {
+            id           : viewAccount
+            onAddAccount : dialogAddUser.show()
+            model        : accountsModel
+            hasFooter    : false
+            delegate     : AccountDelegate {
+                row_width : viewContent.width
+            }
+        }
+        SettingsView { id: viewSettings; }
+        HelpView     { id: viewHelp;     }
+    }
+
+
+    // Bubble prevent action
+    Rectangle {
+        anchors {
+            left: parent.left
+            right: parent.right
+            top: titleBar.bottom
+            bottom: parent.bottom
+        }
+        visible: bubbleNote.visible
+        color: "#aa222222"
+        MouseArea {
+            anchors.fill: parent
+            hoverEnabled: true
+        }
+    }
+    BubbleNote {
+        id      : bubbleNote
+        visible : false
+        Component.onCompleted : {
+            bubbleNote.place(0)
+        }
+    }
+
+    BubbleNote {
+        id:addAccountTip
+        anchors.topMargin: viewAccount.separatorNoAccount - 2*Style.main.fontSize
+        text : qsTr("Click here to start", "on first launch, this is displayed above the Add Account button to tell the user what to do first")
+        state: (go.isFirstStart && viewAccount.numAccounts==0 && root.viewContent.currentIndex==0) ? "Visible" : "Invisible"
+        bubbleColor: Style.main.textBlue
+
+        Component.onCompleted : {
+            addAccountTip.place(-1)
+        }
+        enabled: false
+
+        states: [
+            State {
+                name: "Visible"
+                // hack: opacity 100% makes buttons dialog windows quit wrong color
+                PropertyChanges{target: addAccountTip; opacity: 0.999; visible: true}
+            },
+            State {
+                name: "Invisible"
+                PropertyChanges{target: addAccountTip; opacity: 0.0; visible: false}
+            }
+        ]
+
+        transitions: [
+            Transition {
+                from: "Visible"
+                to: "Invisible"
+
+                SequentialAnimation{
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "opacity"
+                        duration: 0
+                        easing.type: Easing.InOutQuad
+                    }
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "visible"
+                        duration: 0
+                    }
+                }
+            },
+            Transition {
+                from: "Invisible"
+                to: "Visible"
+                SequentialAnimation{
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "visible"
+                        duration: 300
+                    }
+                    NumberAnimation {
+                        target: addAccountTip
+                        property: "opacity"
+                        duration: 500
+                        easing.type: Easing.InOutQuad
+                    }
+                }
+            }
+        ]
+    }
+
+
+    // Dialogs
+
+    DialogAddUser {
+        id: dialogAddUser
+
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+        onCreateAccount: Qt.openUrlExternally("https://protonmail.com/signup")
+    }
+
+    DialogUpdate {
+        id: dialogUpdate
+
+        title: root.isOutdateVersion ?
+        qsTr("%1 is outdated", "title of outdate dialog").arg(go.programTitle):
+        qsTr("%1 update to %2", "title of update dialog").arg(go.programTitle).arg(go.newversion)
+        introductionText: {
+            if (root.isOutdateVersion) {
+                if (go.goos=="linux") {
+                    return qsTr('You are using an outdated version of our software.<br>
+                    Please dowload and install the latest version to continue using %1.<br><br>
+                    <a href="%2">%2</a>',
+                    "Message for force-update in Linux").arg(go.programTitle).arg(go.landingPage)
+                } else {
+                    return qsTr('You are using an outdated version of our software.<br>
+                    Please dowload and install the latest version to continue using %1.<br><br>
+                    You can continue with update or download and install the new version manually from<br><br>
+                    <a href="%2">%2</a>',
+                    "Message for force-update in Win/Mac").arg(go.programTitle).arg(go.landingPage)
+                }
+            } else {
+                if (go.goos=="linux") {
+                    return qsTr('A new version of %1 is available.<br>
+                    Check <a href="%2">release notes</a> to learn what is new in %3.<br>
+                    Use your package manager to update or download and install new the version manually from<br><br>
+                    <a href="%4">%4</a>',
+                    "Message for update in Linux").arg(go.programTitle).arg("releaseNotes").arg(go.newversion).arg(go.landingPage)
+                } else {
+                    return qsTr('A new version of %1 is available.<br>
+                    Check <a href="%2">release notes</a> to learn what is new in %3.<br>
+                    You can continue with update or download and install new the version manually from<br><br>
+                    <a href="%4">%4</a>',
+                    "Message for update in Win/Mac").arg(go.programTitle).arg("releaseNotes").arg(go.newversion).arg(go.landingPage)
+                }
+            }
+        }
+    }
+
+
+    DialogExport {
+        id: dialogExport
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+    }
+
+    DialogImport {
+        id: dialogImport
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+    }
+
+    Dialog {
+        id: dialogCredits
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+
+        title: qsTr("Credits", "title for list of credited libraries")
+
+        Credits { }
+    }
+
+    Dialog {
+        id: dialogVersionInfo
+        anchors {
+            top   : infoBar.bottom
+            bottomMargin: innerWindowBorder
+            leftMargin: innerWindowBorder
+            rightMargin: innerWindowBorder
+        }
+        property bool checkVersion : false
+        title: qsTr("Information about", "title of release notes page") + " v" + go.newversion
+        VersionInfo { }
+        onShow : {
+            // Hide information bar with olde version
+            if ( infoBar.state=="oldVersion" ) {
+                infoBar.state="upToDate"
+                dialogVersionInfo.checkVersion = true
+            }
+        }
+        onHide : {
+            // Reload current version based on online status
+            if (dialogVersionInfo.checkVersion) go.runCheckVersion(false)
+            dialogVersionInfo.checkVersion = false
+        }
+    }
+
+    DialogYesNo {
+        id: dialogGlobal
+        question : ""
+        answer   : ""
+        z: 100
+    }
+
+    PopupEditFolder {
+        id: popupFolderEdit
+        anchors {
+            left: parent.left
+            right: parent.right
+            top: infoBar.bottom
+            bottom: parent.bottom
+        }
+    }
+
+    // Popup
+    PopupMessage {
+        id: popupMessage
+        anchors {
+            left   : parent.left
+            right  : parent.right
+            top    : infoBar.bottom
+            bottom : parent.bottom
+        }
+
+        onClickedNo: popupMessage.hide()
+        onClickedOkay: popupMessage.hide()
+        onClickedCancel: popupMessage.hide()
+        onClickedYes: {
+            if (popupMessage.text == gui.areYouSureYouWantToQuit) Qt.quit()
+        }
+    }
+
+    // resize
+    MouseArea { // bottom
+        id: resizeBottom
+        property int diff: 0
+        anchors {
+            bottom : parent.bottom
+            left   : parent.left
+            right  : parent.right
+        }
+        cursorShape: Qt.SizeVerCursor
+        height: Style.main.fontSize
+        onPressed: {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            resizeBottom.diff = root.height
+            resizeBottom.diff -= globPos.y
+        }
+        onMouseYChanged : {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            root.height =  Math.max(root.minimumHeight, globPos.y + resizeBottom.diff)
+        }
+    }
+
+    MouseArea { // right
+        id: resizeRight
+        property int diff: 0
+        anchors {
+            top    : titleBar.bottom
+            bottom : parent.bottom
+            right  : parent.right
+        }
+        cursorShape: Qt.SizeHorCursor
+        width: Style.main.fontSize/2
+        onPressed: {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            resizeRight.diff = root.width
+            resizeRight.diff -= globPos.x
+        }
+        onMouseXChanged : {
+            var globPos = mapToGlobal(mouse.x, mouse.y)
+            root.width =  Math.max(root.minimumWidth, globPos.x + resizeRight.diff)
+        }
+    }
+
+    function showAndRise(){
+        go.loadAccounts()
+        root.show()
+        root.raise()
+        if (!root.active) {
+            root.requestActivate()
+        }
+    }
+
+    // Toggle window
+    function toggle() {
+        go.loadAccounts()
+        if (root.visible) {
+            if (!root.active) {
+                root.raise()
+                root.requestActivate()
+            } else {
+                root.hide()
+            }
+        } else {
+            root.show()
+            root.raise()
+        }
+    }
+
+    onClosing : {
+        close.accepted=false
+        if (
+            (dialogImport.visible && dialogImport.currentIndex == 4 && go.progress!=1) ||
+            (dialogExport.visible && dialogExport.currentIndex == 2 && go.progress!=1)
+        ) {
+            popupMessage.buttonOkay   .visible = false
+            popupMessage.buttonYes    .visible = false
+            popupMessage.buttonQuit   .visible = true
+            popupMessage.buttonCancel .visible = true
+            popupMessage.show ( gui.areYouSureYouWantToQuit )
+            return
+        }
+
+        close.accepted=true
+        go.processFinished()
+    }
+}

internal/frontend/qml/ImportExportUI/OutputFormat.qml

@@ -0,0 +1,84 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Column {
+    spacing: Style.dialog.spacing
+    property string checkedText : group.checkedButton.text
+
+    Text {
+        id: formatLabel
+        font {
+            pointSize: Style.dialog.fontSize * Style.pt
+            bold: true
+        }
+        color: Style.dialog.text
+        text: qsTr("Select format of exported email:")
+
+        InfoToolTip {
+            info: qsTr("MBOX exports one file for each folder", "todo") + "\n" + qsTr("EML exports one file for each email", "todo")
+            anchors {
+                left: parent.right
+                leftMargin: Style.dialog.spacing
+                verticalCenter: parent.verticalCenter
+            }
+        }
+    }
+
+    Row {
+        spacing : Style.main.leftMargin
+        ButtonGroup {
+            id: group
+        }
+
+        Repeater {
+            model: [ "MBOX", "EML" ]
+            delegate : RadioButton {
+                id: radioDelegate
+                checked: modelData=="MBOX"
+                width: 5*Style.dialog.fontSize // hack due to bold
+                text: modelData
+                ButtonGroup.group: group
+                spacing: Style.main.spacing
+                indicator: Text {
+                    text  : radioDelegate.checked ? Style.fa.check_circle : Style.fa.circle_o
+                    color : radioDelegate.checked ? Style.main.textBlue   : Style.main.textInactive
+                    font {
+                        pointSize: Style.dialog.iconSize * Style.pt
+                        family: Style.fontawesome.name
+                    }
+                    anchors.verticalCenter: parent.verticalCenter
+                }
+                contentItem: Text {
+                    text: radioDelegate.text
+                    color: Style.main.text
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                        bold: checked
+                    }
+                    horizontalAlignment : Text.AlignHCenter
+                    verticalAlignment   : Text.AlignVCenter
+                    leftPadding: Style.dialog.iconSize
+                }
+            }
+        }
+    }
+}

internal/frontend/qml/ImportExportUI/PopupEditFolder.qml

@@ -0,0 +1,311 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// popup to edit folders or labels
+import QtQuick 2.8
+import QtQuick.Controls 2.1
+import ImportExportUI 1.0
+import ProtonUI 1.0
+
+
+Rectangle {
+    id: root
+    visible: false
+    color: "#aa223344"
+
+    property string folderType    : gui.enums.folderTypeFolder
+    property bool   isFolder      : folderType == gui.enums.folderTypeFolder
+    property bool   isNew         : currentId == ""
+    property bool   isCreateLater : currentId == "createLater" // NOTE: "createLater" is hack because folder id should be base64 string
+
+    property string currentName   : ""
+    property string currentId     : ""
+    property string currentColor  : ""
+
+    property string sourceID      : ""
+    property string selectedColor : colorList[0]
+
+    property color textColor : Style.main.background
+    property color backColor : Style.bubble.paneBackground
+
+    signal edited(string newName, string newColor)
+
+
+
+
+    property var colorList : [ "#7272a7", "#8989ac", "#cf5858", "#cf7e7e", "#c26cc7", "#c793ca", "#7569d1", "#9b94d1", "#69a9d1", "#a8c4d5", "#5ec7b7", "#97c9c1", "#72bb75", "#9db99f", "#c3d261", "#c6cd97", "#e6c04c", "#e7d292", "#e6984c", "#dfb286" ]
+
+    MouseArea { // prevent action below aka modal: true
+        anchors.fill: parent
+        hoverEnabled: true
+    }
+
+    Rectangle {
+        id:background
+
+        anchors {
+            fill: root
+            leftMargin: winMain.width/6
+            topMargin: winMain.height/6
+            rightMargin: anchors.leftMargin
+            bottomMargin: anchors.topMargin
+        }
+
+        color: backColor
+        radius: Style.errorDialog.radius
+    }
+
+
+    Column { // content
+        anchors {
+            top              : background.top
+            horizontalCenter : background.horizontalCenter
+        }
+
+        topPadding    : Style.main.topMargin
+        bottomPadding : topPadding
+        spacing       : (background.height - title.height - inputField.height - view.height - buttonRow.height - topPadding - bottomPadding) / children.length
+
+        Text {
+            id: title
+
+            font.pointSize: Style.dialog.titleSize * Style.pt
+            color: textColor
+
+            text: {
+                if ( root.isFolder  && root.isNew  ) return qsTr ( "Create new folder" )
+                if ( !root.isFolder && root.isNew  ) return qsTr ( "Create new label"  )
+                if ( root.isFolder  && !root.isNew ) return qsTr ( "Edit folder %1"    ) .arg( root.currentName )
+                if ( !root.isFolder && !root.isNew ) return qsTr ( "Edit label %1"     ) .arg( root.currentName )
+            }
+
+            width  : parent.width
+            elide  : Text.ElideRight
+
+            horizontalAlignment : Text.AlignHCenter
+
+            Rectangle {
+                anchors {
+                    top: parent.bottom
+                    topMargin: Style.dialog.spacing
+                    horizontalCenter: parent.horizontalCenter
+                }
+                color: textColor
+                height: Style.main.borderInput
+            }
+        }
+
+        TextField {
+            id: inputField
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            width          : parent.width
+            height         : Style.dialog.button
+            rightPadding   : Style.dialog.spacing
+            leftPadding    : height + rightPadding
+            bottomPadding  : rightPadding
+            topPadding     : rightPadding
+            selectByMouse  : true
+            color          : textColor
+            font.pointSize : Style.dialog.fontSize * Style.pt
+
+            background: Rectangle {
+                color: backColor
+                border {
+                    color: textColor
+                    width: Style.dialog.borderInput
+                }
+
+                radius : Style.dialog.radiusButton
+
+                Text {
+                    anchors {
+                        left: parent.left
+                        verticalCenter: parent.verticalCenter
+                    }
+
+                    font {
+                        family: Style.fontawesome.name
+                        pointSize: Style.dialog.titleSize * Style.pt
+                    }
+
+                    text  : folderType == gui.enums.folderTypeFolder ? Style.fa.folder : Style.fa.tag
+                    color : root.selectedColor
+                    width : parent.height
+                    horizontalAlignment: Text.AlignHCenter
+                }
+
+                Rectangle {
+                    anchors {
+                        left: parent.left
+                        top: parent.top
+                        leftMargin: parent.height
+                    }
+                    width: parent.border.width/2
+                    height: parent.height
+                }
+            }
+        }
+
+
+        GridView {
+            id: view
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            model      : colorList
+            cellWidth  : 2*Style.dialog.titleSize
+            cellHeight : cellWidth
+            width      : 10*cellWidth
+            height     : 2*cellHeight
+
+            delegate: Rectangle {
+                width: view.cellWidth*0.8
+                height: width
+                radius: width/2
+                color: modelData
+
+                border {
+                    color: indicator.visible ? textColor : modelData
+                    width: 2*Style.px
+                }
+
+                Text {
+                    id: indicator
+                    anchors.centerIn : parent
+                    text: Style.fa.check
+                    color: textColor
+                    font {
+                        family: Style.fontawesome.name
+                        pointSize: Style.dialog.titleSize * Style.pt
+                    }
+                    visible: modelData == root.selectedColor
+                }
+
+                MouseArea {
+                    anchors.fill: parent
+                    onClicked : {
+                        root.selectedColor = modelData
+                    }
+                }
+            }
+        }
+
+        Row {
+            id: buttonRow
+
+            anchors {
+                horizontalCenter: parent.horizontalCenter
+            }
+
+            spacing: Style.main.leftMargin
+
+            ButtonRounded {
+                text: "Cancel"
+                color_main : textColor
+                onClicked :{
+                    root.hide()
+                }
+            }
+
+            ButtonRounded {
+                text: "Okay"
+                color_main: Style.dialog.background
+                color_minor: Style.dialog.textBlue
+                isOpaque: true
+                onClicked :{
+                    root.okay()
+                }
+            }
+        }
+    }
+
+    function hide() {
+        root.visible=false
+        root.currentId = ""
+        root.currentName = ""
+        root.currentColor = ""
+        root.folderType = ""
+        root.sourceID = ""
+        inputField.text = ""
+    }
+
+    function show(currentName, currentId, currentColor, folderType, sourceID) {
+        root.currentId = currentId
+        root.currentName = currentName
+        root.currentColor = currentColor=="" ? go.leastUsedColor() : currentColor
+        root.selectedColor =  root.currentColor
+        root.folderType = folderType
+        root.sourceID = sourceID
+
+        inputField.text = currentName
+        root.visible=true
+        //console.log(title.text , root.currentName, root.currentId, root.currentColor, root.folderType, root.sourceID) 
+    }
+
+    function okay() {
+        // check inpupts
+        if (inputField.text == "") {
+            go.notifyError(gui.enums.errFillFolderName)
+            return
+        }
+        if (colorList.indexOf(root.selectedColor)<0) {
+            go.notifyError(gui.enums.errSelectFolderColor)
+            return
+        }
+        var isLabel = root.folderType == gui.enums.folderTypeLabel
+        if (!isLabel && !root.isFolder){
+            console.log("Unknown folder type: ", root.folderType)
+            go.notifyError(gui.enums.errUpdateLabelFailed)
+            root.hide()
+            return
+        }
+
+        if (winMain.dialogImport.address == "") {
+            console.log("Unknown address", winMain.dialogImport.address)
+            go.onNotifyError(gui.enums.errUpdateLabelFailed)
+            root.hide()
+        }
+
+        if (root.isCreateLater) {
+            root.edited(inputField.text, root.selectedColor)
+            root.hide()
+            return
+        }
+
+
+        // TODO send request (as timer)
+        if (root.isNew) {
+            var isOK = go.createLabelOrFolder(winMain.dialogImport.address, inputField.text, root.selectedColor, isLabel, root.sourceID)
+            if (isOK) {
+                root.hide()
+            }
+        } else {
+            // TODO: check there was some change
+            go.updateLabelOrFolder(winMain.dialogImport.address, root.currentId, inputField.text, root.selectedColor)
+        }
+
+        // waiting for finish
+        // TODO: waiting wheel of doom
+        // TODO: on close add source to sourceID
+    }
+}

internal/frontend/qml/ImportExportUI/SelectFolderMenu.qml

@@ -0,0 +1,355 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// This is global combo box which can be adjusted to choose folder target, folder label or global label
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+ComboBox {
+    id: root
+    //fixme rounded
+    height: Style.main.fontSize*2 //fixme
+    property string folderType: gui.enums.folderTypeFolder
+    property string sourceID
+    property var targets
+    property bool isFolderType: root.folderType == gui.enums.folderTypeFolder
+    property bool below: true
+
+    signal doNotImport()
+    signal importToFolder(string newTargetID)
+    signal addTargetLabel(string newTargetID)
+    signal removeTargetLabel(string newTargetID)
+
+    leftPadding: Style.dialog.spacing
+
+    onDownChanged : {
+        root.below = popup.y>0
+    }
+
+    contentItem : Row {
+        id: boxText
+
+        Text {
+            anchors.verticalCenter: parent.verticalCenter
+            font {
+                pointSize: Style.dialog.fontSize * Style.pt
+                family: Style.fontawesome.name
+            }
+            text: {
+                if (view.currentIndex >= 0) {
+                    if (!root.isFolderType) {
+                        return Style.fa.tags + " "
+                    }
+                    var tgtIcon = view.currentItem.folderIcon
+                    var tgtColor = view.currentItem.folderColor
+                    if (tgtIcon != Style.fa.folder_open) {
+                        return tgtIcon + " "
+                    }
+                    return '<font color="'+tgtColor+'">'+ tgtIcon + "</font> "
+                }
+                return ""
+            }
+            color: !root.enabled ? Style.main.textDisabled : ( root.down ? Style.main.background : Style.main.text )
+        }
+
+        Text {
+            anchors.verticalCenter: parent.verticalCenter
+            font {
+                pointSize : Style.dialog.fontSize * Style.pt
+                bold: root.down
+            }
+            elide: Text.ElideRight
+            textFormat: Text.StyledText
+
+            text : root.displayText
+            color: !root.enabled ? Style.main.textDisabled : ( root.down ? Style.main.background : Style.main.text )
+        }
+    }
+
+    displayText: {
+        if (view.currentIndex >= 0) {
+            if (!root.isFolderType) return qsTr("Add/Remove labels")
+            return view.currentItem.folderName
+        }
+        if (root.isFolderType) return qsTr("No folder selected")
+        return qsTr("No labels selected")
+    }
+
+
+    background : RoundedRectangle {
+        fillColor         : root.down ? Style.main.textBlue : Style.transparent
+        strokeColor       : root.down ? fillColor : Style.main.line
+        radiusTopLeft     : root.down && !root.below ? 0 : Style.dialog.radiusButton
+        radiusBottomLeft  : root.down && root.below ? 0 : Style.dialog.radiusButton
+        radiusTopRight    : radiusTopLeft
+        radiusBottomRight : radiusBottomLeft
+
+        MouseArea {
+            anchors.fill: parent
+            onClicked : {
+                if (root.down) root.popup.close()
+                else root.popup.open()
+            }
+        }
+    }
+
+    indicator : Text {
+        text: (root.down && root.below) || (!root.down && !root.below) ? Style.fa.chevron_up : Style.fa.chevron_down
+        anchors {
+            right: parent.right
+            verticalCenter: parent.verticalCenter
+            rightMargin: Style.dialog.spacing
+        }
+        font {
+            family : Style.fontawesome.name
+            pointSize : Style.dialog.fontSize * Style.pt
+        }
+        color: root.enabled && !root.down ? Style.main.textBlue : root.contentItem.color
+    }
+
+    // Popup row
+    delegate: Rectangle {
+        id: thisDelegate
+
+        height : Style.main.fontSize * 2
+        width  : selectNone.width
+
+        property bool isHovered: area.containsMouse
+
+        color: isHovered ? root.popup.hoverColor : root.popup.backColor
+
+        property bool isSelected : isActive
+        property string folderName: name
+        property string folderIcon: gui.folderIcon(name,type)
+        property string folderColor: (type == gui.enums.folderTypeLabel || type == gui.enums.folderTypeFolder) ? iconColor : root.popup.textColor
+
+        Text {
+            id: targetIcon
+            text: thisDelegate.folderIcon
+            color : thisDelegate.folderColor
+            anchors {
+                verticalCenter: parent.verticalCenter
+                left: parent.left
+                leftMargin: root.leftPadding
+            }
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            id: targetName
+
+
+            anchors {
+                verticalCenter: parent.verticalCenter
+                left: targetIcon.right
+                right: parent.right
+                leftMargin: Style.dialog.spacing
+                rightMargin: Style.dialog.spacing
+            }
+
+            text: thisDelegate.folderName
+            color : root.popup.textColor
+            elide: Text.ElideRight
+
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Text {
+            id: targetIndicator
+            anchors {
+                right: parent.right
+                verticalCenter: parent.verticalCenter
+            }
+
+            text    : thisDelegate.isSelected ? Style.fa.check_square : Style.fa.square_o
+            visible : thisDelegate.isSelected || !root.isFolderType
+            color   : root.popup.textColor
+            font {
+                family : Style.fontawesome.name
+                pointSize : Style.dialog.fontSize * Style.pt
+            }
+        }
+
+        Rectangle {
+            id: line
+            anchors {
+                bottom : parent.bottom
+                left   : parent.left
+                right  : parent.right
+            }
+            height : Style.main.lineWidth
+            color  : Style.main.line
+        }
+
+        MouseArea {
+            id: area
+            anchors.fill: parent
+
+            onClicked: {
+                //console.log(" click delegate")
+                if (root.isFolderType) { // don't update if selected
+                    root.popup.close()
+                    if (!isActive) {
+                        root.importToFolder(mboxID)
+                    }
+                } else {
+                    if (isActive) {
+                        root.removeTargetLabel(mboxID)
+                    } else  {
+                        root.addTargetLabel(mboxID)
+                    }
+                }
+            }
+            hoverEnabled: true
+        }
+    }
+
+    popup : Popup {
+        y: root.height
+        width: root.width
+        modal: true
+        closePolicy: Popup.CloseOnPressOutside | Popup.CloseOnEscape
+        padding: Style.dialog.spacing
+
+        property var textColor  : Style.main.background
+        property var backColor  : Style.main.text
+        property var hoverColor : Style.main.textBlue
+
+        contentItem : Column {
+            // header
+            Rectangle {
+                id: selectNone
+                width: root.popup.width - 2*root.popup.padding
+                //height: root.isFolderType ? 2* Style.main.fontSize : 0
+                height: 2*Style.main.fontSize
+                color: area.containsMouse ? root.popup.hoverColor : root.popup.backColor
+                visible : root.isFolderType
+
+                Text {
+                    anchors {
+                        left           : parent.left
+                        leftMargin     : Style.dialog.spacing
+                        verticalCenter : parent.verticalCenter
+                    }
+                    text: root.isFolderType ? qsTr("Do not import") : ""
+                    color: root.popup.textColor
+                    font {
+                        pointSize: Style.dialog.fontSize * Style.pt
+                        bold: true
+                    }
+                }
+
+                Rectangle {
+                    id: line
+                    anchors {
+                        bottom : parent.bottom
+                        left   : parent.left
+                        right  : parent.right
+                    }
+                    height : Style.dialog.borderInput
+                    color  : Style.main.line
+                }
+
+                MouseArea {
+                    id: area
+                    anchors.fill: parent
+                    onClicked: {
+                        //console.log(" click no set")
+                        root.doNotImport()
+                        root.popup.close()
+                    }
+                    hoverEnabled: true
+                }
+            }
+
+            // scroll area
+            Rectangle {
+                width: selectNone.width
+                height: winMain.height/4
+                color: root.popup.backColor
+
+                ListView {
+                    id: view
+
+                    clip         : true
+                    anchors.fill : parent
+                    model        : root.targets
+                    delegate     : root.delegate
+
+                    currentIndex: view.model.selectedIndex
+                }
+            }
+
+            // footer
+            Rectangle {
+                id: addFolderOrLabel
+                width: selectNone.width
+                height: addButton.height + 3*Style.dialog.spacing
+                color: root.popup.backColor
+
+                Rectangle {
+                    anchors {
+                        top   : parent.top
+                        left  : parent.left
+                        right : parent.right
+                    }
+                    height : Style.dialog.borderInput
+                    color  : Style.main.line
+                }
+
+                ButtonRounded {
+                    id: addButton
+                    anchors.centerIn: addFolderOrLabel
+                    width: parent.width * 0.681
+
+                    fa_icon    : Style.fa.plus_circle
+                    text       : root.isFolderType ? qsTr("Create new folder") : qsTr("Create new label")
+                    color_main : root.popup.textColor
+                }
+
+                MouseArea {
+                    anchors.fill : parent
+
+                    onClicked  : {
+                        //console.log("click", addButton.text)
+                        var newName = name
+                        winMain.popupFolderEdit.show(newName, "", "", root.folderType, sourceID)
+                        root.popup.close()
+                    }
+                }
+            }
+        }
+
+        background : RoundedRectangle {
+            strokeColor       : root.popup.backColor
+            fillColor         : root.popup.backColor
+            radiusTopLeft     : root.below  ? 0 : Style.dialog.radiusButton
+            radiusBottomLeft  : !root.below ? 0 : Style.dialog.radiusButton
+            radiusTopRight    : radiusTopLeft
+            radiusBottomRight : radiusBottomLeft
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/SelectLabelsMenu.qml

@@ -0,0 +1,29 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List of import folder and their target
+import QtQuick 2.8
+import QtQuick.Controls 2.2
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+SelectFolderMenu {
+    id: root
+    folderType: gui.enums.folderTypeLabel
+}
+
+

internal/frontend/qml/ImportExportUI/SettingsView.qml

@@ -0,0 +1,149 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// List the settings
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+
+    // must have wrapper
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: parent.width
+        height: parent.height
+        color: Style.main.background
+
+        // content
+        Column {
+            anchors.left : parent.left
+
+            ButtonIconText {
+                id: cacheKeychain
+                text: qsTr("Clear Keychain")
+                leftIcon.text  : Style.fa.chain_broken
+                rightIcon {
+                    text : qsTr("Clear")
+                    color: Style.main.text
+                    font {
+                        family : cacheKeychain.font.family // use default font, not font-awesome
+                        pointSize : Style.settings.fontSize * Style.pt
+                        underline : true
+                    }
+                }
+                onClicked: {
+                    dialogGlobal.state="clearChain"
+                    dialogGlobal.show()
+                }
+            }
+
+            ButtonIconText {
+                id: logs
+                anchors.left: parent.left
+                text: qsTr("Logs")
+                leftIcon.text  : Style.fa.align_justify
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: go.openLogs()
+            }
+
+            ButtonIconText {
+                id: bugreport
+                anchors.left: parent.left
+                text: qsTr("Report Bug")
+                leftIcon.text  : Style.fa.bug
+                rightIcon.text : Style.fa.chevron_circle_right
+                rightIcon.font.pointSize : Style.settings.toggleSize * Style.pt
+                onClicked: bugreportWin.show()
+            }
+
+            /*
+
+             ButtonIconText {
+                 id: cacheClear
+                 text: qsTr("Clear Cache")
+                 leftIcon.text  : Style.fa.times
+                 rightIcon {
+                     text : qsTr("Clear")
+                     color: Style.main.text
+                     font {
+                         pointSize : Style.settings.fontSize * Style.pt
+                         underline : true
+                     }
+                 }
+                 onClicked: {
+                     dialogGlobal.state="clearCache"
+                     dialogGlobal.show()
+                 }
+             }
+
+
+             ButtonIconText {
+                 id: autoStart
+                 text: qsTr("Automatically Start Bridge")
+                 leftIcon.text  : Style.fa.rocket
+                 rightIcon {
+                     font.pointSize : Style.settings.toggleSize * Style.pt
+                     text  : go.isAutoStart!=0 ? Style.fa.toggle_on  : Style.fa.toggle_off
+                     color : go.isAutoStart!=0 ? Style.main.textBlue : Style.main.textDisabled
+                 }
+                 onClicked: {
+                     go.toggleAutoStart()
+                 }
+             }
+
+             ButtonIconText {
+                 id: advancedSettings
+                 property bool isAdvanced : !go.isDefaultPort
+                 text: qsTr("Advanced settings")
+                 leftIcon.text  : Style.fa.cogs
+                 rightIcon {
+                     font.pointSize : Style.settings.toggleSize * Style.pt
+                     text  : isAdvanced!=0 ? Style.fa.chevron_circle_up  : Style.fa.chevron_circle_right
+                     color : isAdvanced!=0 ? Style.main.textDisabled : Style.main.textBlue
+                 }
+                 onClicked: {
+                     isAdvanced = !isAdvanced
+                 }
+             }
+
+             ButtonIconText {
+                 id: changePort
+                 visible: advancedSettings.isAdvanced
+                 text: qsTr("Change SMTP/IMAP Ports")
+                 leftIcon.text  : Style.fa.plug
+                 rightIcon {
+                     text : qsTr("Change")
+                     color: Style.main.text
+                     font {
+                         pointSize : Style.settings.fontSize * Style.pt
+                         underline : true
+                     }
+                 }
+                 onClicked: {
+                     dialogChangePort.show()
+                 }
+             }
+             */
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/VersionInfo.qml

@@ -0,0 +1,125 @@
+// Copyright (c) 2021 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+// credits
+
+import QtQuick 2.8
+import ProtonUI 1.0
+import ImportExportUI 1.0
+
+Item {
+    id: root
+    Rectangle {
+        id: wrapper
+        anchors.centerIn: parent
+        width: 2*Style.main.width/3
+        height: Style.main.height - 6*Style.dialog.titleSize
+        color: "transparent"
+
+        Flickable {
+            anchors.fill       : wrapper
+            contentWidth       : wrapper.width
+            contentHeight      : content.height
+            flickableDirection : Flickable.VerticalFlick
+            clip               : true
+
+
+            Column {
+                id: content
+                anchors.top: parent.top
+                anchors.horizontalCenter: parent.horizontalCenter
+                width: wrapper.width
+                spacing: 5
+
+                Text {
+                    visible: go.changelog != ""
+                    anchors {
+                        left: parent.left
+                    }
+                    font.bold: true
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    color: Style.main.text
+                    text: qsTr("Release notes:")
+                }
+
+                Text {
+                    anchors {
+                        left: parent.left
+                        leftMargin: Style.main.leftMargin
+                    }
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    width: wrapper.width - anchors.leftMargin
+                    wrapMode: Text.Wrap
+                    color: Style.main.text
+                    text: go.changelog
+                }
+
+                Text {
+                    visible: go.bugfixes != ""
+                    anchors {
+                        left: parent.left
+                    }
+                    font.bold: true
+                    font.pointSize: Style.main.fontSize * Style.pt
+                    color: Style.main.text
+                    text: qsTr("Fixed bugs:")
+                }
+
+                Repeater {
+                    anchors.fill: parent
+                    model: go.bugfixes.split(";")
+
+                    Text {
+                        visible: go.bugfixes!=""
+                        anchors {
+                            left: parent.left
+                            leftMargin: Style.main.leftMargin
+                        }
+                        font.pointSize: Style.main.fontSize * Style.pt
+                        width: wrapper.width - anchors.leftMargin
+                        wrapMode: Text.Wrap
+                        color: Style.main.text
+                        text: modelData
+                    }
+                }
+
+                Rectangle{id:spacer; color:"transparent"; width:10; height: buttonClose.height}
+
+
+                ButtonRounded {
+                    id: buttonClose
+                    anchors.horizontalCenter: content.horizontalCenter
+                    text: "Close"
+                    onClicked: {
+                        root.parent.hide()
+                    }
+                }
+
+
+                AccessibleSelectableText {
+                    anchors.horizontalCenter: content.horizontalCenter
+                    font {
+                        pointSize : Style.main.fontSize * Style.pt
+                    }
+                    color: Style.main.textDisabled
+                    text: "\n Current: "+go.fullversion
+                }
+            }
+        }
+    }
+}
+

internal/frontend/qml/ImportExportUI/qmldir

@@ -0,0 +1,31 @@
+module ImportExportUI
+AccountDelegate      1.0 AccountDelegate.qml
+Credits              1.0 Credits.qml
+DateBox              1.0 DateBox.qml
+DateInput            1.0 DateInput.qml
+DateRangeMenu        1.0 DateRangeMenu.qml
+DateRange            1.0 DateRange.qml
+DateRangeFunctions   1.0 DateRangeFunctions.qml
+DialogExport         1.0 DialogExport.qml
+DialogImport         1.0 DialogImport.qml
+DialogYesNo          1.0 DialogYesNo.qml
+ExportStructure      1.0 ExportStructure.qml
+FilterStructure      1.0 FilterStructure.qml
+FolderRowButton      1.0 FolderRowButton.qml
+HelpView             1.0 HelpView.qml
+IEStyle              1.0 IEStyle.qml
+ImportDelegate       1.0 ImportDelegate.qml
+ImportSourceButton   1.0 ImportSourceButton.qml
+ImportStructure      1.0 ImportStructure.qml
+ImportReport         1.0 ImportReport.qml
+ImportReportCell     1.0 ImportReportCell.qml
+InlineDateRange      1.0 InlineDateRange.qml
+InlineLabelSelect    1.0 InlineLabelSelect.qml
+LabelIconList        1.0 LabelIconList.qml
+MainWindow           1.0 MainWindow.qml
+OutputFormat         1.0 OutputFormat.qml
+PopupEditFolder      1.0 PopupEditFolder.qml
+SelectFolderMenu     1.0 SelectFolderMenu.qml
+SelectLabelsMenu     1.0 SelectLabelsMenu.qml
+SettingsView         1.0 SettingsView.qml
+VersionInfo          1.0 VersionInfo.qml

internal/frontend/qml/ProtonUI/AccessibleButton.qml

@@ -1,4 +1,4 @@
-// Copyright (c) 2020 Proton Technologies AG
+// Copyright (c) 2021 Proton Technologies AG
 //
 // This file is part of ProtonMail Bridge.
 //