feat(GODT-2295): notifications for IMAP login when signed out.

2025-12-10 12:46:46 +00:00 · 2023-02-02 18:19:40 +01:00
parent a36dbbf422
commit c3d5a0b8f8
26 changed files with 1519 additions and 624 deletions
--- a/go.mod
+++ b/go.mod
@ -5,7 +5,7 @@ go 1.18
 require (
 	github.com/0xAX/notificator v0.0.0-20220220101646-ee9b8921e557
 	github.com/Masterminds/semver/v3 v3.1.1
-	github.com/ProtonMail/gluon v0.14.2-0.20230201115538-18e0b89693fc
+	github.com/ProtonMail/gluon v0.14.2-0.20230202124956-4fa6b6a0b9b5
 	github.com/ProtonMail/go-autostart v0.0.0-20210130080809-00ed301c8e9a
 	github.com/ProtonMail/go-proton-api v0.3.1-0.20230202061850-e2fc4deffe20
 	github.com/ProtonMail/go-rfc5322 v0.11.0
--- a/go.sum
+++ b/go.sum
@ -28,8 +28,8 @@ github.com/ProtonMail/bcrypt v0.0.0-20211005172633-e235017c1baf h1:yc9daCCYUefEs
 github.com/ProtonMail/bcrypt v0.0.0-20211005172633-e235017c1baf/go.mod h1:o0ESU9p83twszAU8LBeJKFAAMX14tISa0yk4Oo5TOqo=
 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/gluon v0.14.2-0.20230201115538-18e0b89693fc h1:q7sX422Eu9H97v2sLRPmPFi8yBJtNwQRzVN9DSmBHvc=
-github.com/ProtonMail/gluon v0.14.2-0.20230201115538-18e0b89693fc/go.mod h1:HYHr7hG7LPWI1S50M8NfHRb1kYi5B+Yu4/N/H+y+JUY=
+github.com/ProtonMail/gluon v0.14.2-0.20230202124956-4fa6b6a0b9b5 h1:AvU75C80KwKiPcAolL0p26zNdjJvr49qlVjgbqY+VsM=
+github.com/ProtonMail/gluon v0.14.2-0.20230202124956-4fa6b6a0b9b5/go.mod h1:HYHr7hG7LPWI1S50M8NfHRb1kYi5B+Yu4/N/H+y+JUY=
 github.com/ProtonMail/go-autostart v0.0.0-20210130080809-00ed301c8e9a h1:D+aZah+k14Gn6kmL7eKxoo/4Dr/lK3ChBcwce2+SQP4=
 github.com/ProtonMail/go-autostart v0.0.0-20210130080809-00ed301c8e9a/go.mod h1:oTGdE7/DlWIr23G0IKW3OXK9wZ5Hw1GGiaJFccTvZi4=
 github.com/ProtonMail/go-crypto v0.0.0-20210428141323-04723f9f07d7/go.mod h1:z4/9nQmJSSwwds7ejkxaJwO37dru3geImFUdJlaLzQo=
--- a/internal/bridge/bridge_test.go
+++ b/internal/bridge/bridge_test.go
@ -21,6 +21,7 @@ import (
 	"context"
 	"crypto/tls"
 	"fmt"
+	"net"
 	"net/http"
 	"os"
 	"path/filepath"
@ -497,6 +498,21 @@ func TestBridge_InitGluonDirectory(t *testing.T) {
 	})
 }

+func TestBridge_LoginFailed(t *testing.T) {
+	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
+		withBridge(ctx, t, s.GetHostURL(), netCtl, locator, vaultKey, func(bridge *bridge.Bridge, mocks *bridge.Mocks) {
+			failCh, done := chToType[events.Event, events.IMAPLoginFailed](bridge.GetEvents(events.IMAPLoginFailed{}))
+			defer done()
+
+			imapClient, err := client.Dial(net.JoinHostPort(constants.Host, fmt.Sprint(bridge.GetIMAPPort())))
+			require.NoError(t, err)
+
+			require.Error(t, imapClient.Login("badUser", "badPass"))
+			require.Equal(t, "badUser", (<-failCh).Username)
+		})
+	})
+}
+
 func TestBridge_ChangeCacheDirectory(t *testing.T) {
 	withEnv(t, func(ctx context.Context, s *server.Server, netCtl *proton.NetCtl, locator bridge.Locator, vaultKey []byte) {
 		userID, addrID, err := s.CreateUser("imap", password)
--- a/internal/bridge/imap.go
+++ b/internal/bridge/imap.go
@ -33,6 +33,7 @@ import (
 	"github.com/ProtonMail/gluon/store"
 	"github.com/ProtonMail/proton-bridge/v3/internal/async"
 	"github.com/ProtonMail/proton-bridge/v3/internal/constants"
+	"github.com/ProtonMail/proton-bridge/v3/internal/events"
 	"github.com/ProtonMail/proton-bridge/v3/internal/logging"
 	"github.com/ProtonMail/proton-bridge/v3/internal/user"
 	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
@ -228,6 +229,13 @@ func (bridge *Bridge) handleIMAPEvent(event imapEvents.Event) {
 		if event.IMAPID.Name != "" && event.IMAPID.Version != "" {
 			bridge.identifier.SetClient(event.IMAPID.Name, event.IMAPID.Version)
 		}
+
+	case imapEvents.LoginFailed:
+		logrus.WithFields(logrus.Fields{
+			"sessionID": event.SessionID,
+			"username":  event.Username,
+		}).Info("Received IMAP login failure notification")
+		bridge.publish(events.IMAPLoginFailed{Username: event.Username})
 	}
 }

--- a/internal/events/user.go
+++ b/internal/events/user.go
@ -169,3 +169,13 @@ type UsedSpaceChanged struct {
 func (event UsedSpaceChanged) String() string {
 	return fmt.Sprintf("UsedSpaceChanged: UserID: %s, UsedSpace: %v", event.UserID, event.UsedSpace)
 }
+
+type IMAPLoginFailed struct {
+	eventBase
+
+	Username string
+}
+
+func (event IMAPLoginFailed) String() string {
+	return fmt.Sprintf("IMAPLoginFailed: Username: %s", event.Username)
+}
--- a/internal/frontend/bridge-gui/bridge-gui-tester/Tabs/UsersTab.cpp
+++ b/internal/frontend/bridge-gui/bridge-gui-tester/Tabs/UsersTab.cpp
@ -52,6 +52,7 @@ UsersTab::UsersTab(QWidget *parent)
    connect(ui_.tableUserList, &QTableView::doubleClicked, this, &UsersTab::onEditUserButton);
    connect(ui_.buttonRemoveUser, &QPushButton::clicked, this, &UsersTab::onRemoveUserButton);
    connect(ui_.buttonUserBadEvent, &QPushButton::clicked, this, &UsersTab::onSendUserBadEvent);
+    connect(ui_.buttonImapLoginFailed, &QPushButton::clicked, this, &UsersTab::onSendIMAPLoginFailedEvent);
    connect(ui_.buttonUsedBytesChanged, &QPushButton::clicked, this, &UsersTab::onSendUsedBytesChangedEvent);
    connect(ui_.checkUsernamePasswordError, &QCheckBox::toggled, this, &UsersTab::updateGUIState);

@ -189,6 +190,19 @@ void UsersTab::onSendUsedBytesChangedEvent() {
 }


+//****************************************************************************************************************************************************
+//
+//****************************************************************************************************************************************************
+void UsersTab::onSendIMAPLoginFailedEvent() {
+    GRPCService &grpc = app().grpc();
+    if (grpc.isStreaming()) {
+        grpc.sendEvent(newIMAPLoginFailedEvent(ui_.editIMAPLoginFailedUsername->text()));
+    }
+
+    this->updateGUIState();
+}
+
+
 //****************************************************************************************************************************************************
 //
 //****************************************************************************************************************************************************
@ -203,6 +217,9 @@ void UsersTab::updateGUIState() {
    ui_.groupBoxUsedSpace->setEnabled(hasSelectedUser && (UserState::Connected == state));
    ui_.editUsernamePasswordError->setEnabled(ui_.checkUsernamePasswordError->isChecked());
    ui_.spinUsedBytes->setValue(user ? user->usedBytes() : 0.0);
+
+    if (user)
+        ui_.editIMAPLoginFailedUsername->setText(user->primaryEmailOrUsername());
 }


--- a/internal/frontend/bridge-gui/bridge-gui-tester/Tabs/UsersTab.h
+++ b/internal/frontend/bridge-gui/bridge-gui-tester/Tabs/UsersTab.h
@ -62,6 +62,7 @@ private slots:
    void onSelectionChanged(QItemSelection, QItemSelection); ///< Slot for the change of the selection.
    void onSendUserBadEvent(); ///< Slot for the 'Send Bad Event Error' button.
    void onSendUsedBytesChangedEvent(); ///< Slot for the 'Send Used Bytes Changed Event' button.
+    void onSendIMAPLoginFailedEvent(); ///< Slot for the 'Send IMAP Login failure Event' button.
    void updateGUIState(); ///< Update the GUI state.

 private: // member functions.
--- a/internal/frontend/bridge-gui/bridge-gui-tester/Tabs/UsersTab.ui
+++ b/internal/frontend/bridge-gui/bridge-gui-tester/Tabs/UsersTab.ui
@ -66,52 +66,6 @@
       </property>
      </spacer>
     </item>
-     <item>
-      <widget class="QGroupBox" name="groupBoxUsedSpace">
-       <property name="minimumSize">
-        <size>
-         <width>0</width>
-         <height>0</height>
-        </size>
-       </property>
-       <property name="title">
-        <string>Used Bytes Changed</string>
-       </property>
-       <layout class="QVBoxLayout" name="verticalLayout_4">
-        <item>
-         <layout class="QHBoxLayout" name="hBoxUsedBytes" stretch="0,1">
-          <item>
-           <widget class="QLabel" name="labelUsedBytes">
-            <property name="text">
-             <string>Used Bytes</string>
-            </property>
-           </widget>
-          </item>
-          <item>
-           <widget class="QDoubleSpinBox" name="spinUsedBytes">
-            <property name="buttonSymbols">
-             <enum>QAbstractSpinBox::NoButtons</enum>
-            </property>
-            <property name="decimals">
-             <number>0</number>
-            </property>
-            <property name="maximum">
-             <double>1000000000000000.000000000000000</double>
-            </property>
-           </widget>
-          </item>
-         </layout>
-        </item>
-        <item>
-         <widget class="QPushButton" name="buttonUsedBytesChanged">
-          <property name="text">
-           <string>Send Used Bytes Changed</string>
-          </property>
-         </widget>
-        </item>
-       </layout>
-      </widget>
-     </item>
     <item>
      <widget class="QGroupBox" name="groupBoxBadEvent">
       <property name="minimumSize">
@ -126,13 +80,6 @@
       <layout class="QVBoxLayout" name="verticalLayout_3">
        <item>
         <layout class="QHBoxLayout" name="horizontalLayout_3">
-          <item>
-           <widget class="QLabel" name="labelUserBadEvent">
-            <property name="text">
-             <string>Message: </string>
-            </property>
-           </widget>
-          </item>
          <item>
           <widget class="QLineEdit" name="editUserBadEvent">
            <property name="minimumSize">
@ -142,18 +89,102 @@
             </size>
            </property>
            <property name="text">
-             <string>Bad event error.</string>
+             <string/>
+            </property>
+            <property name="placeholderText">
+             <string>error message</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QPushButton" name="buttonUserBadEvent">
+            <property name="text">
+             <string>Send</string>
            </property>
           </widget>
          </item>
         </layout>
        </item>
+       </layout>
+      </widget>
+     </item>
+     <item>
+      <widget class="QGroupBox" name="groupBoxUsedSpace">
+       <property name="minimumSize">
+        <size>
+         <width>0</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="title">
+        <string>Used Bytes Changed</string>
+       </property>
+       <layout class="QVBoxLayout" name="verticalLayout_4">
        <item>
-         <widget class="QPushButton" name="buttonUserBadEvent">
-          <property name="text">
-           <string>Send Bad Event Error</string>
-          </property>
-         </widget>
+         <layout class="QHBoxLayout" name="hBoxUsedBytes" stretch="1,0">
+          <item>
+           <widget class="QDoubleSpinBox" name="spinUsedBytes">
+            <property name="buttonSymbols">
+             <enum>QAbstractSpinBox::NoButtons</enum>
+            </property>
+            <property name="decimals">
+             <number>0</number>
+            </property>
+            <property name="maximum">
+             <double>1000000000000000.000000000000000</double>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QPushButton" name="buttonUsedBytesChanged">
+            <property name="text">
+             <string>Send</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </item>
+       </layout>
+      </widget>
+     </item>
+     <item>
+      <widget class="QGroupBox" name="groupBoxIMAPLoginFailed">
+       <property name="minimumSize">
+        <size>
+         <width>0</width>
+         <height>0</height>
+        </size>
+       </property>
+       <property name="title">
+        <string>IMAP Login Failure</string>
+       </property>
+       <layout class="QVBoxLayout" name="verticalLayout_8">
+        <item>
+         <layout class="QHBoxLayout" name="horizontalLayout_7">
+          <item>
+           <widget class="QLineEdit" name="editIMAPLoginFailedUsername">
+            <property name="minimumSize">
+             <size>
+              <width>200</width>
+              <height>0</height>
+             </size>
+            </property>
+            <property name="text">
+             <string/>
+            </property>
+            <property name="placeholderText">
+             <string>username or primary email</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QPushButton" name="buttonImapLoginFailed">
+            <property name="text">
+             <string>Send</string>
+            </property>
+           </widget>
+          </item>
+         </layout>
        </item>
       </layout>
      </widget>
--- a/internal/frontend/bridge-gui/bridge-gui/QMLBackend.cpp
+++ b/internal/frontend/bridge-gui/bridge-gui/QMLBackend.cpp
@ -467,6 +467,7 @@ bool QMLBackend::isDoHEnabled() const {
    )
 }

+
 //****************************************************************************************************************************************************
 /// \return The value for the 'isAutomaticUpdateOn' property.
 //****************************************************************************************************************************************************
@ -876,8 +877,9 @@ void QMLBackend::onUserBadEvent(QString const &userID, QString const &errorMessa
    HANDLE_EXCEPTION(
        Q_UNUSED(errorMessage);
        SPUser const user = users_->getUserWithID(userID);
-        if (!user)
+        if (!user) {
            app().log().error(QString("Received bad event for unknown user %1").arg(user->id()));
+        }
        user->setState(UserState::SignedOut);
        emit userBadEvent(tr("%1 was logged out because of an internal error.").arg(user->primaryEmailOrUsername()));
        emit selectUser(userID);
@ -886,6 +888,24 @@ void QMLBackend::onUserBadEvent(QString const &userID, QString const &errorMessa
 }


+//****************************************************************************************************************************************************
+/// \param[in] username The username (or primary email address)
+//****************************************************************************************************************************************************
+void QMLBackend::onIMAPLoginFailed(QString const &username) {
+    HANDLE_EXCEPTION(
+        SPUser const user = users_->getUserWithUsernameOrEmail(username);
+        if ((!user) || (user->state() != UserState::SignedOut)) { // We want to pop-up only if a signed-out user has been detected
+            return;
+        }
+        if (user->isInIMAPLoginFailureCooldown())
+            return;
+        user->startImapLoginFailureCooldown(60 * 60 * 1000); // 1 hour cooldown during which we will not display this notification to this user again.
+        emit selectUser(user->id());
+        emit imapLoginWhileSignedOut(username);
+    )
+}
+
+
 //****************************************************************************************************************************************************
 //
 //****************************************************************************************************************************************************
@ -994,5 +1014,7 @@ void QMLBackend::connectGrpcEvents() {
    // user events
    connect(client, &GRPCClient::userDisconnected, this, &QMLBackend::userDisconnected);
    connect(client, &GRPCClient::userBadEvent, this, &QMLBackend::onUserBadEvent);
+    connect(client, &GRPCClient::imapLoginFailed, this, &QMLBackend::onIMAPLoginFailed);
+
    users_->connectGRPCEvents();
 }
--- a/internal/frontend/bridge-gui/bridge-gui/QMLBackend.h
+++ b/internal/frontend/bridge-gui/bridge-gui/QMLBackend.h
@ -180,6 +180,7 @@ public slots: // slot for signals received from gRPC that need transformation in
    void onLoginFinished(QString const &userID, bool wasSignedOut); ///< Slot for LoginFinished gRPC event.
    void onLoginAlreadyLoggedIn(QString const &userID); ///< Slot for the LoginAlreadyLoggedIn gRPC event.
    void onUserBadEvent(QString const& userID, QString const& errorMessage); ///< Slot for the userBadEvent gRPC event.
+    void onIMAPLoginFailed(QString const& username); ///< Slot the the imapLoginFailed event.

 signals: // Signals received from the Go backend, to be forwarded to QML
    void toggleAutostartFinished(); ///< Signal for the 'toggleAutostartFinished' gRPC stream event.
@ -233,6 +234,7 @@ signals: // Signals received from the Go backend, to be forwarded to QML
    void hideMainWindow(); ///< Signal for the 'hideMainWindow' gRPC stream event.
    void genericError(QString const &title, QString const &description); ///< Signal for the 'genericError' gRPC stream event.
    void selectUser(QString const); ///< Signal that request the given user account to be displayed.
+    void imapLoginWhileSignedOut(QString const& username); ///< Signal for the notification of IMAP login attempt on a signed out account.

    // This signal is emitted when an exception is intercepted is calls triggered by QML. QML engine would intercept the exception otherwise.
    void fatalError(QString const &function, QString const &message) const; ///< Signal emitted when an fatal error occurs.
--- a/internal/frontend/bridge-gui/bridge-gui/UserList.cpp
+++ b/internal/frontend/bridge-gui/bridge-gui/UserList.cpp
@ -149,6 +149,19 @@ bridgepp::SPUser UserList::getUserWithID(QString const &userID) const {
 }


+//****************************************************************************************************************************************************
+/// \param[in] username The username or email.
+/// \return The user with the given ID.
+/// \return A null pointer if the user could not be found.
+//****************************************************************************************************************************************************
+bridgepp::SPUser UserList::getUserWithUsernameOrEmail(QString const &username) const {
+    QList<SPUser>::const_iterator it = std::find_if(users_.begin(), users_.end(), [username](SPUser const &user) -> bool {
+        return user && ((username.compare(user->username(), Qt::CaseInsensitive) == 0) || user->addresses().contains(username, Qt::CaseInsensitive));
+    });
+    return (it == users_.end()) ? nullptr : *it;
+}
+
+
 //****************************************************************************************************************************************************
 /// \param[in] row The row.
 //****************************************************************************************************************************************************
--- a/internal/frontend/bridge-gui/bridge-gui/UserList.h
+++ b/internal/frontend/bridge-gui/bridge-gui/UserList.h
@ -44,6 +44,7 @@ public: // member functions.
    void appendUser(bridgepp::SPUser const &user); ///< Add a new user.
    void updateUserAtRow(int row, bridgepp::User const &user); ///< Update the user at given row.
    bridgepp::SPUser getUserWithID(QString const &userID) const; ///< Retrieve the user with the given ID.
+    bridgepp::SPUser getUserWithUsernameOrEmail(QString const& username) const; ///< Retrieve the user with the given primary email address or username

    // the userCount property.
    Q_PROPERTY(int count READ count NOTIFY countChanged)
--- a/internal/frontend/bridge-gui/bridge-gui/qml/Notifications/Notifications.qml
+++ b/internal/frontend/bridge-gui/bridge-gui/qml/Notifications/Notifications.qml
@ -81,6 +81,7 @@ QtObject {
        root.apiCertIssue,
        root.noActiveKeyForRecipient,
        root.userBadEvent,
+        root.imapLoginWhileSignedOut,
        root.genericError
    ]

@ -1129,6 +1130,34 @@ QtObject {
        ]
    }

+    property Notification imapLoginWhileSignedOut: Notification {
+        title: qsTr("IMAP Login failed")
+        brief: title
+        description: "#PlaceHolderText"
+        icon: "./icons/ic-exclamation-circle-filled.svg"
+        type: Notification.NotificationType.Danger
+        group: Notifications.Group.Connection
+
+        Connections {
+            target: Backend
+            function onImapLoginWhileSignedOut(username) {
+                root.imapLoginWhileSignedOut.description = qsTr("An email client tried to connect to the account %1, but this account is signed " +
+                "out. Please sign-in to continue.").arg(username)
+                root.imapLoginWhileSignedOut.active = true
+            }
+        }
+
+        action: [
+            Action {
+                text: qsTr("OK")
+
+                onTriggered: {
+                    root.imapLoginWhileSignedOut.active = false
+                }
+            }
+        ]
+    }
+
    property Notification genericError: Notification {
        title: "#PlaceholderText#"
        description: "#PlaceholderText#"
--- a/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/EventFactory.cpp
+++ b/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/EventFactory.cpp
@ -588,6 +588,19 @@ SPStreamEvent newUsedBytesChangedEvent(QString const &userID, qint64 usedBytes)
 }


+//****************************************************************************************************************************************************
+/// \param[in] username The username that was provided for the failed IMAP login attempt.
+/// \return The event.
+//****************************************************************************************************************************************************
+SPStreamEvent newIMAPLoginFailedEvent(QString const &username) {
+    auto event = new grpc::ImapLoginFailedEvent;
+    event->set_username(username.toStdString());
+    auto userEvent = new grpc::UserEvent;
+    userEvent->set_allocated_imaploginfailedevent(event);
+    return wrapUserEvent(userEvent);
+}
+
+
 //****************************************************************************************************************************************************
 /// \param[in] errorCode The error errorCode.
 /// \return The event.
--- a/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/EventFactory.h
+++ b/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/EventFactory.h
@ -79,6 +79,7 @@ SPStreamEvent newUserDisconnectedEvent(QString const &username); ///< Create a n
 SPStreamEvent newUserChangedEvent(QString const &userID); ///< Create a new UserChangedEvent event.
 SPStreamEvent newUserBadEvent(QString const &userID, QString const& errorMessage); ///< Create a new UserBadEvent event.
 SPStreamEvent newUsedBytesChangedEvent(QString const &userID, qint64 usedBytes);  ///< Create a new UsedBytesChangedEvent event.
+SPStreamEvent newIMAPLoginFailedEvent(QString const &username); ///< Create a new ImapLoginFailedEvent event.

 // Generic error event
 SPStreamEvent newGenericErrorEvent(grpc::ErrorCode errorCode); ///< Create a new GenericErrrorEvent event.
--- a/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/GRPCClient.cpp
+++ b/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/GRPCClient.cpp
@ -1382,6 +1382,13 @@ void GRPCClient::processUserEvent(UserEvent const &event) {
        emit usedBytesChanged(userID, usedBytes);
        break;
    }
+    case UserEvent::kImapLoginFailedEvent: {
+        ImapLoginFailedEvent const& e = event.imaploginfailedevent();
+        QString const username = QString::fromStdString(e.username());
+        this->logTrace(QString("User event received: IMAPLoginFailed (username = %1).:").arg(username));
+        emit imapLoginFailed(username);
+        break;
+    }
    default:
        this->logError("Unknown User event received.");
    }
--- a/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/GRPCClient.h
+++ b/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/GRPCClient.h
@ -180,6 +180,7 @@ signals:
    void userChanged(QString const &userID);
    void userBadEvent(QString const &userID, QString const& errorMessage);
    void usedBytesChanged(QString const &userID, qint64 usedBytes);
+    void imapLoginFailed(QString const& username);

 public: // keychain related calls
    grpc::Status availableKeychains(QStringList &outKeychains);
--- a/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/bridge.pb.cc
+++ b/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/bridge.pb.cc
@ -773,6 +773,19 @@ struct UsedBytesChangedEventDefaultTypeInternal {
  };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 UsedBytesChangedEventDefaultTypeInternal _UsedBytesChangedEvent_default_instance_;
+PROTOBUF_CONSTEXPR ImapLoginFailedEvent::ImapLoginFailedEvent(
+    ::_pbi::ConstantInitialized): _impl_{
+    /*decltype(_impl_.username_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
+  , /*decltype(_impl_._cached_size_)*/{}} {}
+struct ImapLoginFailedEventDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR ImapLoginFailedEventDefaultTypeInternal()
+      : _instance(::_pbi::ConstantInitialized{}) {}
+  ~ImapLoginFailedEventDefaultTypeInternal() {}
+  union {
+    ImapLoginFailedEvent _instance;
+  };
+};
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 ImapLoginFailedEventDefaultTypeInternal _ImapLoginFailedEvent_default_instance_;
 PROTOBUF_CONSTEXPR GenericErrorEvent::GenericErrorEvent(
    ::_pbi::ConstantInitialized): _impl_{
    /*decltype(_impl_.code_)*/0
@ -787,7 +800,7 @@ struct GenericErrorEventDefaultTypeInternal {
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 GenericErrorEventDefaultTypeInternal _GenericErrorEvent_default_instance_;
 }  // namespace grpc
-static ::_pb::Metadata file_level_metadata_bridge_2eproto[59];
+static ::_pb::Metadata file_level_metadata_bridge_2eproto[60];
 static const ::_pb::EnumDescriptor* file_level_enum_descriptors_bridge_2eproto[7];
 static constexpr ::_pb::ServiceDescriptor const** file_level_service_descriptors_bridge_2eproto = nullptr;

@ -1214,6 +1227,7 @@ const uint32_t TableStruct_bridge_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(p
  ::_pbi::kInvalidFieldOffsetTag,
  ::_pbi::kInvalidFieldOffsetTag,
  ::_pbi::kInvalidFieldOffsetTag,
+  ::_pbi::kInvalidFieldOffsetTag,
  PROTOBUF_FIELD_OFFSET(::grpc::UserEvent, _impl_.event_),
  ~0u,  // no _has_bits_
  PROTOBUF_FIELD_OFFSET(::grpc::ToggleSplitModeFinishedEvent, _internal_metadata_),
@ -1253,6 +1267,13 @@ const uint32_t TableStruct_bridge_2eproto::offsets[] PROTOBUF_SECTION_VARIABLE(p
  PROTOBUF_FIELD_OFFSET(::grpc::UsedBytesChangedEvent, _impl_.userid_),
  PROTOBUF_FIELD_OFFSET(::grpc::UsedBytesChangedEvent, _impl_.usedbytes_),
  ~0u,  // no _has_bits_
+  PROTOBUF_FIELD_OFFSET(::grpc::ImapLoginFailedEvent, _internal_metadata_),
+  ~0u,  // no _extensions_
+  ~0u,  // no _oneof_case_
+  ~0u,  // no _weak_field_map_
+  ~0u,  // no _inlined_string_donated_
+  PROTOBUF_FIELD_OFFSET(::grpc::ImapLoginFailedEvent, _impl_.username_),
+  ~0u,  // no _has_bits_
  PROTOBUF_FIELD_OFFSET(::grpc::GenericErrorEvent, _internal_metadata_),
  ~0u,  // no _extensions_
  ~0u,  // no _oneof_case_
@ -1314,12 +1335,13 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
  { 398, -1, -1, sizeof(::grpc::AddressChangedLogoutEvent)},
  { 405, -1, -1, sizeof(::grpc::ApiCertIssueEvent)},
  { 411, -1, -1, sizeof(::grpc::UserEvent)},
-  { 423, -1, -1, sizeof(::grpc::ToggleSplitModeFinishedEvent)},
-  { 430, -1, -1, sizeof(::grpc::UserDisconnectedEvent)},
-  { 437, -1, -1, sizeof(::grpc::UserChangedEvent)},
-  { 444, -1, -1, sizeof(::grpc::UserBadEvent)},
-  { 452, -1, -1, sizeof(::grpc::UsedBytesChangedEvent)},
-  { 460, -1, -1, sizeof(::grpc::GenericErrorEvent)},
+  { 424, -1, -1, sizeof(::grpc::ToggleSplitModeFinishedEvent)},
+  { 431, -1, -1, sizeof(::grpc::UserDisconnectedEvent)},
+  { 438, -1, -1, sizeof(::grpc::UserChangedEvent)},
+  { 445, -1, -1, sizeof(::grpc::UserBadEvent)},
+  { 453, -1, -1, sizeof(::grpc::UsedBytesChangedEvent)},
+  { 461, -1, -1, sizeof(::grpc::ImapLoginFailedEvent)},
+  { 468, -1, -1, sizeof(::grpc::GenericErrorEvent)},
 };

 static const ::_pb::Message* const file_default_instances[] = {
@ -1381,6 +1403,7 @@ static const ::_pb::Message* const file_default_instances[] = {
  &::grpc::_UserChangedEvent_default_instance_._instance,
  &::grpc::_UserBadEvent_default_instance_._instance,
  &::grpc::_UsedBytesChangedEvent_default_instance_._instance,
+  &::grpc::_ImapLoginFailedEvent_default_instance_._instance,
  &::grpc::_GenericErrorEvent_default_instance_._instance,
 };

@ -1502,138 +1525,141 @@ const char descriptor_table_protodef_bridge_2eproto[] PROTOBUF_SECTION_VARIABLE(
  "KeyForRecipientEvent\022\r\n\005email\030\001 \001(\t\"&\n\023A"
  "ddressChangedEvent\022\017\n\007address\030\001 \001(\t\",\n\031A"
  "ddressChangedLogoutEvent\022\017\n\007address\030\001 \001("
-  "\t\"\023\n\021ApiCertIssueEvent\"\255\002\n\tUserEvent\022E\n\027"
+  "\t\"\023\n\021ApiCertIssueEvent\"\351\002\n\tUserEvent\022E\n\027"
  "toggleSplitModeFinished\030\001 \001(\0132\".grpc.Tog"
  "gleSplitModeFinishedEventH\000\0227\n\020userDisco"
  "nnected\030\002 \001(\0132\033.grpc.UserDisconnectedEve"
  "ntH\000\022-\n\013userChanged\030\003 \001(\0132\026.grpc.UserCha"
  "ngedEventH\000\022*\n\014userBadEvent\030\004 \001(\0132\022.grpc"
  ".UserBadEventH\000\022<\n\025usedBytesChangedEvent"
-  "\030\005 \001(\0132\033.grpc.UsedBytesChangedEventH\000B\007\n"
-  "\005event\".\n\034ToggleSplitModeFinishedEvent\022\016"
-  "\n\006userID\030\001 \001(\t\")\n\025UserDisconnectedEvent\022"
-  "\020\n\010username\030\001 \001(\t\"\"\n\020UserChangedEvent\022\016\n"
-  "\006userID\030\001 \001(\t\"4\n\014UserBadEvent\022\016\n\006userID\030"
-  "\001 \001(\t\022\024\n\014errorMessage\030\002 \001(\t\":\n\025UsedBytes"
-  "ChangedEvent\022\016\n\006userID\030\001 \001(\t\022\021\n\tusedByte"
-  "s\030\002 \001(\003\"2\n\021GenericErrorEvent\022\035\n\004code\030\001 \001"
-  "(\0162\017.grpc.ErrorCode*q\n\010LogLevel\022\r\n\tLOG_P"
-  "ANIC\020\000\022\r\n\tLOG_FATAL\020\001\022\r\n\tLOG_ERROR\020\002\022\014\n\010"
-  "LOG_WARN\020\003\022\014\n\010LOG_INFO\020\004\022\r\n\tLOG_DEBUG\020\005\022"
-  "\r\n\tLOG_TRACE\020\006*6\n\tUserState\022\016\n\nSIGNED_OU"
-  "T\020\000\022\n\n\006LOCKED\020\001\022\r\n\tCONNECTED\020\002*\242\001\n\016Login"
-  "ErrorType\022\033\n\027USERNAME_PASSWORD_ERROR\020\000\022\r"
-  "\n\tFREE_USER\020\001\022\024\n\020CONNECTION_ERROR\020\002\022\r\n\tT"
-  "FA_ERROR\020\003\022\r\n\tTFA_ABORT\020\004\022\027\n\023TWO_PASSWOR"
-  "DS_ERROR\020\005\022\027\n\023TWO_PASSWORDS_ABORT\020\006*[\n\017U"
-  "pdateErrorType\022\027\n\023UPDATE_MANUAL_ERROR\020\000\022"
-  "\026\n\022UPDATE_FORCE_ERROR\020\001\022\027\n\023UPDATE_SILENT"
-  "_ERROR\020\002*k\n\022DiskCacheErrorType\022 \n\034DISK_C"
-  "ACHE_UNAVAILABLE_ERROR\020\000\022\036\n\032CANT_MOVE_DI"
-  "SK_CACHE_ERROR\020\001\022\023\n\017DISK_FULL_ERROR\020\002*\335\001"
-  "\n\033MailServerSettingsErrorType\022\033\n\027IMAP_PO"
-  "RT_STARTUP_ERROR\020\000\022\033\n\027SMTP_PORT_STARTUP_"
-  "ERROR\020\001\022\032\n\026IMAP_PORT_CHANGE_ERROR\020\002\022\032\n\026S"
-  "MTP_PORT_CHANGE_ERROR\020\003\022%\n!IMAP_CONNECTI"
-  "ON_MODE_CHANGE_ERROR\020\004\022%\n!SMTP_CONNECTIO"
-  "N_MODE_CHANGE_ERROR\020\005*S\n\tErrorCode\022\021\n\rUN"
-  "KNOWN_ERROR\020\000\022\031\n\025TLS_CERT_EXPORT_ERROR\020\001"
-  "\022\030\n\024TLS_KEY_EXPORT_ERROR\020\0022\231\035\n\006Bridge\022I\n"
-  "\013CheckTokens\022\034.google.protobuf.StringVal"
-  "ue\032\034.google.protobuf.StringValue\022\?\n\013AddL"
-  "ogEntry\022\030.grpc.AddLogEntryRequest\032\026.goog"
-  "le.protobuf.Empty\022:\n\010GuiReady\022\026.google.p"
-  "rotobuf.Empty\032\026.grpc.GuiReadyResponse\0226\n"
-  "\004Quit\022\026.google.protobuf.Empty\032\026.google.p"
-  "rotobuf.Empty\0229\n\007Restart\022\026.google.protob"
-  "uf.Empty\032\026.google.protobuf.Empty\022C\n\rShow"
-  "OnStartup\022\026.google.protobuf.Empty\032\032.goog"
-  "le.protobuf.BoolValue\022F\n\020SetIsAutostartO"
-  "n\022\032.google.protobuf.BoolValue\032\026.google.p"
-  "rotobuf.Empty\022C\n\rIsAutostartOn\022\026.google."
-  "protobuf.Empty\032\032.google.protobuf.BoolVal"
-  "ue\022F\n\020SetIsBetaEnabled\022\032.google.protobuf"
-  ".BoolValue\032\026.google.protobuf.Empty\022C\n\rIs"
-  "BetaEnabled\022\026.google.protobuf.Empty\032\032.go"
-  "ogle.protobuf.BoolValue\022I\n\023SetIsAllMailV"
-  "isible\022\032.google.protobuf.BoolValue\032\026.goo"
-  "gle.protobuf.Empty\022F\n\020IsAllMailVisible\022\026"
-  ".google.protobuf.Empty\032\032.google.protobuf"
-  ".BoolValue\022<\n\004GoOs\022\026.google.protobuf.Emp"
-  "ty\032\034.google.protobuf.StringValue\022>\n\014Trig"
-  "gerReset\022\026.google.protobuf.Empty\032\026.googl"
-  "e.protobuf.Empty\022\?\n\007Version\022\026.google.pro"
-  "tobuf.Empty\032\034.google.protobuf.StringValu"
-  "e\022@\n\010LogsPath\022\026.google.protobuf.Empty\032\034."
-  "google.protobuf.StringValue\022C\n\013LicensePa"
-  "th\022\026.google.protobuf.Empty\032\034.google.prot"
-  "obuf.StringValue\022L\n\024ReleaseNotesPageLink"
+  "\030\005 \001(\0132\033.grpc.UsedBytesChangedEventH\000\022:\n"
+  "\024imapLoginFailedEvent\030\006 \001(\0132\032.grpc.ImapL"
+  "oginFailedEventH\000B\007\n\005event\".\n\034ToggleSpli"
+  "tModeFinishedEvent\022\016\n\006userID\030\001 \001(\t\")\n\025Us"
+  "erDisconnectedEvent\022\020\n\010username\030\001 \001(\t\"\"\n"
+  "\020UserChangedEvent\022\016\n\006userID\030\001 \001(\t\"4\n\014Use"
+  "rBadEvent\022\016\n\006userID\030\001 \001(\t\022\024\n\014errorMessag"
+  "e\030\002 \001(\t\":\n\025UsedBytesChangedEvent\022\016\n\006user"
+  "ID\030\001 \001(\t\022\021\n\tusedBytes\030\002 \001(\003\"(\n\024ImapLogin"
+  "FailedEvent\022\020\n\010username\030\001 \001(\t\"2\n\021Generic"
+  "ErrorEvent\022\035\n\004code\030\001 \001(\0162\017.grpc.ErrorCod"
+  "e*q\n\010LogLevel\022\r\n\tLOG_PANIC\020\000\022\r\n\tLOG_FATA"
+  "L\020\001\022\r\n\tLOG_ERROR\020\002\022\014\n\010LOG_WARN\020\003\022\014\n\010LOG_"
+  "INFO\020\004\022\r\n\tLOG_DEBUG\020\005\022\r\n\tLOG_TRACE\020\006*6\n\t"
+  "UserState\022\016\n\nSIGNED_OUT\020\000\022\n\n\006LOCKED\020\001\022\r\n"
+  "\tCONNECTED\020\002*\242\001\n\016LoginErrorType\022\033\n\027USERN"
+  "AME_PASSWORD_ERROR\020\000\022\r\n\tFREE_USER\020\001\022\024\n\020C"
+  "ONNECTION_ERROR\020\002\022\r\n\tTFA_ERROR\020\003\022\r\n\tTFA_"
+  "ABORT\020\004\022\027\n\023TWO_PASSWORDS_ERROR\020\005\022\027\n\023TWO_"
+  "PASSWORDS_ABORT\020\006*[\n\017UpdateErrorType\022\027\n\023"
+  "UPDATE_MANUAL_ERROR\020\000\022\026\n\022UPDATE_FORCE_ER"
+  "ROR\020\001\022\027\n\023UPDATE_SILENT_ERROR\020\002*k\n\022DiskCa"
+  "cheErrorType\022 \n\034DISK_CACHE_UNAVAILABLE_E"
+  "RROR\020\000\022\036\n\032CANT_MOVE_DISK_CACHE_ERROR\020\001\022\023"
+  "\n\017DISK_FULL_ERROR\020\002*\335\001\n\033MailServerSettin"
+  "gsErrorType\022\033\n\027IMAP_PORT_STARTUP_ERROR\020\000"
+  "\022\033\n\027SMTP_PORT_STARTUP_ERROR\020\001\022\032\n\026IMAP_PO"
+  "RT_CHANGE_ERROR\020\002\022\032\n\026SMTP_PORT_CHANGE_ER"
+  "ROR\020\003\022%\n!IMAP_CONNECTION_MODE_CHANGE_ERR"
+  "OR\020\004\022%\n!SMTP_CONNECTION_MODE_CHANGE_ERRO"
+  "R\020\005*S\n\tErrorCode\022\021\n\rUNKNOWN_ERROR\020\000\022\031\n\025T"
+  "LS_CERT_EXPORT_ERROR\020\001\022\030\n\024TLS_KEY_EXPORT"
+  "_ERROR\020\0022\231\035\n\006Bridge\022I\n\013CheckTokens\022\034.goo"
+  "gle.protobuf.StringValue\032\034.google.protob"
+  "uf.StringValue\022\?\n\013AddLogEntry\022\030.grpc.Add"
+  "LogEntryRequest\032\026.google.protobuf.Empty\022"
+  ":\n\010GuiReady\022\026.google.protobuf.Empty\032\026.gr"
+  "pc.GuiReadyResponse\0226\n\004Quit\022\026.google.pro"
+  "tobuf.Empty\032\026.google.protobuf.Empty\0229\n\007R"
+  "estart\022\026.google.protobuf.Empty\032\026.google."
+  "protobuf.Empty\022C\n\rShowOnStartup\022\026.google"
+  ".protobuf.Empty\032\032.google.protobuf.BoolVa"
+  "lue\022F\n\020SetIsAutostartOn\022\032.google.protobu"
+  "f.BoolValue\032\026.google.protobuf.Empty\022C\n\rI"
+  "sAutostartOn\022\026.google.protobuf.Empty\032\032.g"
+  "oogle.protobuf.BoolValue\022F\n\020SetIsBetaEna"
+  "bled\022\032.google.protobuf.BoolValue\032\026.googl"
+  "e.protobuf.Empty\022C\n\rIsBetaEnabled\022\026.goog"
+  "le.protobuf.Empty\032\032.google.protobuf.Bool"
+  "Value\022I\n\023SetIsAllMailVisible\022\032.google.pr"
+  "otobuf.BoolValue\032\026.google.protobuf.Empty"
+  "\022F\n\020IsAllMailVisible\022\026.google.protobuf.E"
+  "mpty\032\032.google.protobuf.BoolValue\022<\n\004GoOs"
  "\022\026.google.protobuf.Empty\032\034.google.protob"
-  "uf.StringValue\022N\n\026DependencyLicensesLink"
+  "uf.StringValue\022>\n\014TriggerReset\022\026.google."
+  "protobuf.Empty\032\026.google.protobuf.Empty\022\?"
+  "\n\007Version\022\026.google.protobuf.Empty\032\034.goog"
+  "le.protobuf.StringValue\022@\n\010LogsPath\022\026.go"
+  "ogle.protobuf.Empty\032\034.google.protobuf.St"
+  "ringValue\022C\n\013LicensePath\022\026.google.protob"
+  "uf.Empty\032\034.google.protobuf.StringValue\022L"
+  "\n\024ReleaseNotesPageLink\022\026.google.protobuf"
+  ".Empty\032\034.google.protobuf.StringValue\022N\n\026"
+  "DependencyLicensesLink\022\026.google.protobuf"
+  ".Empty\032\034.google.protobuf.StringValue\022G\n\017"
+  "LandingPageLink\022\026.google.protobuf.Empty\032"
+  "\034.google.protobuf.StringValue\022J\n\022SetColo"
+  "rSchemeName\022\034.google.protobuf.StringValu"
+  "e\032\026.google.protobuf.Empty\022G\n\017ColorScheme"
+  "Name\022\026.google.protobuf.Empty\032\034.google.pr"
+  "otobuf.StringValue\022J\n\022CurrentEmailClient"
  "\022\026.google.protobuf.Empty\032\034.google.protob"
-  "uf.StringValue\022G\n\017LandingPageLink\022\026.goog"
+  "uf.StringValue\022;\n\tReportBug\022\026.grpc.Repor"
+  "tBugRequest\032\026.google.protobuf.Empty\022M\n\025E"
+  "xportTLSCertificates\022\034.google.protobuf.S"
+  "tringValue\032\026.google.protobuf.Empty\022E\n\rFo"
+  "rceLauncher\022\034.google.protobuf.StringValu"
+  "e\032\026.google.protobuf.Empty\022I\n\021SetMainExec"
+  "utable\022\034.google.protobuf.StringValue\032\026.g"
+  "oogle.protobuf.Empty\0223\n\005Login\022\022.grpc.Log"
+  "inRequest\032\026.google.protobuf.Empty\0226\n\010Log"
+  "in2FA\022\022.grpc.LoginRequest\032\026.google.proto"
+  "buf.Empty\022=\n\017Login2Passwords\022\022.grpc.Logi"
+  "nRequest\032\026.google.protobuf.Empty\022=\n\nLogi"
+  "nAbort\022\027.grpc.LoginAbortRequest\032\026.google"
+  ".protobuf.Empty\022=\n\013CheckUpdate\022\026.google."
+  "protobuf.Empty\032\026.google.protobuf.Empty\022\?"
+  "\n\rInstallUpdate\022\026.google.protobuf.Empty\032"
+  "\026.google.protobuf.Empty\022L\n\026SetIsAutomati"
+  "cUpdateOn\022\032.google.protobuf.BoolValue\032\026."
+  "google.protobuf.Empty\022I\n\023IsAutomaticUpda"
+  "teOn\022\026.google.protobuf.Empty\032\032.google.pr"
+  "otobuf.BoolValue\022E\n\rDiskCachePath\022\026.goog"
  "le.protobuf.Empty\032\034.google.protobuf.Stri"
-  "ngValue\022J\n\022SetColorSchemeName\022\034.google.p"
-  "rotobuf.StringValue\032\026.google.protobuf.Em"
-  "pty\022G\n\017ColorSchemeName\022\026.google.protobuf"
-  ".Empty\032\034.google.protobuf.StringValue\022J\n\022"
-  "CurrentEmailClient\022\026.google.protobuf.Emp"
-  "ty\032\034.google.protobuf.StringValue\022;\n\tRepo"
-  "rtBug\022\026.grpc.ReportBugRequest\032\026.google.p"
-  "rotobuf.Empty\022M\n\025ExportTLSCertificates\022\034"
-  ".google.protobuf.StringValue\032\026.google.pr"
-  "otobuf.Empty\022E\n\rForceLauncher\022\034.google.p"
-  "rotobuf.StringValue\032\026.google.protobuf.Em"
-  "pty\022I\n\021SetMainExecutable\022\034.google.protob"
-  "uf.StringValue\032\026.google.protobuf.Empty\0223"
-  "\n\005Login\022\022.grpc.LoginRequest\032\026.google.pro"
-  "tobuf.Empty\0226\n\010Login2FA\022\022.grpc.LoginRequ"
-  "est\032\026.google.protobuf.Empty\022=\n\017Login2Pas"
-  "swords\022\022.grpc.LoginRequest\032\026.google.prot"
-  "obuf.Empty\022=\n\nLoginAbort\022\027.grpc.LoginAbo"
-  "rtRequest\032\026.google.protobuf.Empty\022=\n\013Che"
-  "ckUpdate\022\026.google.protobuf.Empty\032\026.googl"
-  "e.protobuf.Empty\022\?\n\rInstallUpdate\022\026.goog"
-  "le.protobuf.Empty\032\026.google.protobuf.Empt"
-  "y\022L\n\026SetIsAutomaticUpdateOn\022\032.google.pro"
-  "tobuf.BoolValue\032\026.google.protobuf.Empty\022"
-  "I\n\023IsAutomaticUpdateOn\022\026.google.protobuf"
-  ".Empty\032\032.google.protobuf.BoolValue\022E\n\rDi"
-  "skCachePath\022\026.google.protobuf.Empty\032\034.go"
-  "ogle.protobuf.StringValue\022H\n\020SetDiskCach"
-  "ePath\022\034.google.protobuf.StringValue\032\026.go"
-  "ogle.protobuf.Empty\022E\n\017SetIsDoHEnabled\022\032"
-  ".google.protobuf.BoolValue\032\026.google.prot"
-  "obuf.Empty\022B\n\014IsDoHEnabled\022\026.google.prot"
-  "obuf.Empty\032\032.google.protobuf.BoolValue\022D"
-  "\n\022MailServerSettings\022\026.google.protobuf.E"
-  "mpty\032\026.grpc.ImapSmtpSettings\022G\n\025SetMailS"
-  "erverSettings\022\026.grpc.ImapSmtpSettings\032\026."
-  "google.protobuf.Empty\022@\n\010Hostname\022\026.goog"
-  "le.protobuf.Empty\032\034.google.protobuf.Stri"
-  "ngValue\022E\n\nIsPortFree\022\033.google.protobuf."
-  "Int32Value\032\032.google.protobuf.BoolValue\022N"
-  "\n\022AvailableKeychains\022\026.google.protobuf.E"
-  "mpty\032 .grpc.AvailableKeychainsResponse\022J"
-  "\n\022SetCurrentKeychain\022\034.google.protobuf.S"
-  "tringValue\032\026.google.protobuf.Empty\022G\n\017Cu"
-  "rrentKeychain\022\026.google.protobuf.Empty\032\034."
-  "google.protobuf.StringValue\022=\n\013GetUserLi"
-  "st\022\026.google.protobuf.Empty\032\026.grpc.UserLi"
-  "stResponse\0223\n\007GetUser\022\034.google.protobuf."
-  "StringValue\032\n.grpc.User\022F\n\020SetUserSplitM"
-  "ode\022\032.grpc.UserSplitModeRequest\032\026.google"
-  ".protobuf.Empty\022B\n\nLogoutUser\022\034.google.p"
-  "rotobuf.StringValue\032\026.google.protobuf.Em"
-  "pty\022B\n\nRemoveUser\022\034.google.protobuf.Stri"
-  "ngValue\032\026.google.protobuf.Empty\022Q\n\026Confi"
-  "gureUserAppleMail\022\037.grpc.ConfigureAppleM"
-  "ailRequest\032\026.google.protobuf.Empty\022\?\n\016Ru"
-  "nEventStream\022\030.grpc.EventStreamRequest\032\021"
-  ".grpc.StreamEvent0\001\022A\n\017StopEventStream\022\026"
-  ".google.protobuf.Empty\032\026.google.protobuf"
-  ".EmptyB6Z4github.com/ProtonMail/proton-b"
-  "ridge/v3/internal/grpcb\006proto3"
+  "ngValue\022H\n\020SetDiskCachePath\022\034.google.pro"
+  "tobuf.StringValue\032\026.google.protobuf.Empt"
+  "y\022E\n\017SetIsDoHEnabled\022\032.google.protobuf.B"
+  "oolValue\032\026.google.protobuf.Empty\022B\n\014IsDo"
+  "HEnabled\022\026.google.protobuf.Empty\032\032.googl"
+  "e.protobuf.BoolValue\022D\n\022MailServerSettin"
+  "gs\022\026.google.protobuf.Empty\032\026.grpc.ImapSm"
+  "tpSettings\022G\n\025SetMailServerSettings\022\026.gr"
+  "pc.ImapSmtpSettings\032\026.google.protobuf.Em"
+  "pty\022@\n\010Hostname\022\026.google.protobuf.Empty\032"
+  "\034.google.protobuf.StringValue\022E\n\nIsPortF"
+  "ree\022\033.google.protobuf.Int32Value\032\032.googl"
+  "e.protobuf.BoolValue\022N\n\022AvailableKeychai"
+  "ns\022\026.google.protobuf.Empty\032 .grpc.Availa"
+  "bleKeychainsResponse\022J\n\022SetCurrentKeycha"
+  "in\022\034.google.protobuf.StringValue\032\026.googl"
+  "e.protobuf.Empty\022G\n\017CurrentKeychain\022\026.go"
+  "ogle.protobuf.Empty\032\034.google.protobuf.St"
+  "ringValue\022=\n\013GetUserList\022\026.google.protob"
+  "uf.Empty\032\026.grpc.UserListResponse\0223\n\007GetU"
+  "ser\022\034.google.protobuf.StringValue\032\n.grpc"
+  ".User\022F\n\020SetUserSplitMode\022\032.grpc.UserSpl"
+  "itModeRequest\032\026.google.protobuf.Empty\022B\n"
+  "\nLogoutUser\022\034.google.protobuf.StringValu"
+  "e\032\026.google.protobuf.Empty\022B\n\nRemoveUser\022"
+  "\034.google.protobuf.StringValue\032\026.google.p"
+  "rotobuf.Empty\022Q\n\026ConfigureUserAppleMail\022"
+  "\037.grpc.ConfigureAppleMailRequest\032\026.googl"
+  "e.protobuf.Empty\022\?\n\016RunEventStream\022\030.grp"
+  "c.EventStreamRequest\032\021.grpc.StreamEvent0"
+  "\001\022A\n\017StopEventStream\022\026.google.protobuf.E"
+  "mpty\032\026.google.protobuf.EmptyB6Z4github.c"
+  "om/ProtonMail/proton-bridge/v3/internal/"
+  "grpcb\006proto3"
  ;
 static const ::_pbi::DescriptorTable* const descriptor_table_bridge_2eproto_deps[2] = {
  &::descriptor_table_google_2fprotobuf_2fempty_2eproto,
@ -1641,9 +1667,9 @@ static const ::_pbi::DescriptorTable* const descriptor_table_bridge_2eproto_deps
 };
 static ::_pbi::once_flag descriptor_table_bridge_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_bridge_2eproto = {
-    false, false, 9950, descriptor_table_protodef_bridge_2eproto,
+    false, false, 10052, descriptor_table_protodef_bridge_2eproto,
    "bridge.proto",
-    &descriptor_table_bridge_2eproto_once, descriptor_table_bridge_2eproto_deps, 2, 59,
+    &descriptor_table_bridge_2eproto_once, descriptor_table_bridge_2eproto_deps, 2, 60,
    schemas, file_default_instances, TableStruct_bridge_2eproto::offsets,
    file_level_metadata_bridge_2eproto, file_level_enum_descriptors_bridge_2eproto,
    file_level_service_descriptors_bridge_2eproto,
@ -12407,6 +12433,7 @@ class UserEvent::_Internal {
  static const ::grpc::UserChangedEvent& userchanged(const UserEvent* msg);
  static const ::grpc::UserBadEvent& userbadevent(const UserEvent* msg);
  static const ::grpc::UsedBytesChangedEvent& usedbyteschangedevent(const UserEvent* msg);
+  static const ::grpc::ImapLoginFailedEvent& imaploginfailedevent(const UserEvent* msg);
 };

 const ::grpc::ToggleSplitModeFinishedEvent&
@ -12429,6 +12456,10 @@ const ::grpc::UsedBytesChangedEvent&
 UserEvent::_Internal::usedbyteschangedevent(const UserEvent* msg) {
  return *msg->_impl_.event_.usedbyteschangedevent_;
 }
+const ::grpc::ImapLoginFailedEvent&
+UserEvent::_Internal::imaploginfailedevent(const UserEvent* msg) {
+  return *msg->_impl_.event_.imaploginfailedevent_;
+}
 void UserEvent::set_allocated_togglesplitmodefinished(::grpc::ToggleSplitModeFinishedEvent* togglesplitmodefinished) {
  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
  clear_event();
@ -12504,6 +12535,21 @@ void UserEvent::set_allocated_usedbyteschangedevent(::grpc::UsedBytesChangedEven
  }
  // @@protoc_insertion_point(field_set_allocated:grpc.UserEvent.usedBytesChangedEvent)
 }
+void UserEvent::set_allocated_imaploginfailedevent(::grpc::ImapLoginFailedEvent* imaploginfailedevent) {
+  ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
+  clear_event();
+  if (imaploginfailedevent) {
+    ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
+      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(imaploginfailedevent);
+    if (message_arena != submessage_arena) {
+      imaploginfailedevent = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, imaploginfailedevent, submessage_arena);
+    }
+    set_has_imaploginfailedevent();
+    _impl_.event_.imaploginfailedevent_ = imaploginfailedevent;
+  }
+  // @@protoc_insertion_point(field_set_allocated:grpc.UserEvent.imapLoginFailedEvent)
+}
 UserEvent::UserEvent(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                         bool is_message_owned)
  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
@ -12546,6 +12592,11 @@ UserEvent::UserEvent(const UserEvent& from)
          from._internal_usedbyteschangedevent());
      break;
    }
+    case kImapLoginFailedEvent: {
+      _this->_internal_mutable_imaploginfailedevent()->::grpc::ImapLoginFailedEvent::MergeFrom(
+          from._internal_imaploginfailedevent());
+      break;
+    }
    case EVENT_NOT_SET: {
      break;
    }
@ -12618,6 +12669,12 @@ void UserEvent::clear_event() {
      }
      break;
    }
+    case kImapLoginFailedEvent: {
+      if (GetArenaForAllocation() == nullptr) {
+        delete _impl_.event_.imaploginfailedevent_;
+      }
+      break;
+    }
    case EVENT_NOT_SET: {
      break;
    }
@ -12682,6 +12739,14 @@ const char* UserEvent::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx
        } else
          goto handle_unusual;
        continue;
+      // .grpc.ImapLoginFailedEvent imapLoginFailedEvent = 6;
+      case 6:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 50)) {
+          ptr = ctx->ParseMessage(_internal_mutable_imaploginfailedevent(), ptr);
+          CHK_(ptr);
+        } else
+          goto handle_unusual;
+        continue;
      default:
        goto handle_unusual;
    }  // switch
@ -12746,6 +12811,13 @@ uint8_t* UserEvent::_InternalSerialize(
        _Internal::usedbyteschangedevent(this).GetCachedSize(), target, stream);
  }

+  // .grpc.ImapLoginFailedEvent imapLoginFailedEvent = 6;
+  if (_internal_has_imaploginfailedevent()) {
+    target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
+      InternalWriteMessage(6, _Internal::imaploginfailedevent(this),
+        _Internal::imaploginfailedevent(this).GetCachedSize(), target, stream);
+  }
+
  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
@ -12798,6 +12870,13 @@ size_t UserEvent::ByteSizeLong() const {
          *_impl_.event_.usedbyteschangedevent_);
      break;
    }
+    // .grpc.ImapLoginFailedEvent imapLoginFailedEvent = 6;
+    case kImapLoginFailedEvent: {
+      total_size += 1 +
+        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
+          *_impl_.event_.imaploginfailedevent_);
+      break;
+    }
    case EVENT_NOT_SET: {
      break;
    }
@ -12846,6 +12925,11 @@ void UserEvent::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROT
          from._internal_usedbyteschangedevent());
      break;
    }
+    case kImapLoginFailedEvent: {
+      _this->_internal_mutable_imaploginfailedevent()->::grpc::ImapLoginFailedEvent::MergeFrom(
+          from._internal_imaploginfailedevent());
+      break;
+    }
    case EVENT_NOT_SET: {
      break;
    }
@ -13971,6 +14055,209 @@ void UsedBytesChangedEvent::InternalSwap(UsedBytesChangedEvent* other) {

 // ===================================================================

+class ImapLoginFailedEvent::_Internal {
+ public:
+};
+
+ImapLoginFailedEvent::ImapLoginFailedEvent(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                         bool is_message_owned)
+  : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
+  SharedCtor(arena, is_message_owned);
+  // @@protoc_insertion_point(arena_constructor:grpc.ImapLoginFailedEvent)
+}
+ImapLoginFailedEvent::ImapLoginFailedEvent(const ImapLoginFailedEvent& from)
+  : ::PROTOBUF_NAMESPACE_ID::Message() {
+  ImapLoginFailedEvent* const _this = this; (void)_this;
+  new (&_impl_) Impl_{
+      decltype(_impl_.username_){}
+    , /*decltype(_impl_._cached_size_)*/{}};
+
+  _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+  _impl_.username_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.username_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (!from._internal_username().empty()) {
+    _this->_impl_.username_.Set(from._internal_username(), 
+      _this->GetArenaForAllocation());
+  }
+  // @@protoc_insertion_point(copy_constructor:grpc.ImapLoginFailedEvent)
+}
+
+inline void ImapLoginFailedEvent::SharedCtor(
+    ::_pb::Arena* arena, bool is_message_owned) {
+  (void)arena;
+  (void)is_message_owned;
+  new (&_impl_) Impl_{
+      decltype(_impl_.username_){}
+    , /*decltype(_impl_._cached_size_)*/{}
+  };
+  _impl_.username_.InitDefault();
+  #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+    _impl_.username_.Set("", GetArenaForAllocation());
+  #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+}
+
+ImapLoginFailedEvent::~ImapLoginFailedEvent() {
+  // @@protoc_insertion_point(destructor:grpc.ImapLoginFailedEvent)
+  if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
+  (void)arena;
+    return;
+  }
+  SharedDtor();
+}
+
+inline void ImapLoginFailedEvent::SharedDtor() {
+  GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
+  _impl_.username_.Destroy();
+}
+
+void ImapLoginFailedEvent::SetCachedSize(int size) const {
+  _impl_._cached_size_.Set(size);
+}
+
+void ImapLoginFailedEvent::Clear() {
+// @@protoc_insertion_point(message_clear_start:grpc.ImapLoginFailedEvent)
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  _impl_.username_.ClearToEmpty();
+  _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
+}
+
+const char* ImapLoginFailedEvent::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+#define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
+  while (!ctx->Done(&ptr)) {
+    uint32_t tag;
+    ptr = ::_pbi::ReadTag(ptr, &tag);
+    switch (tag >> 3) {
+      // string username = 1;
+      case 1:
+        if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
+          auto str = _internal_mutable_username();
+          ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
+          CHK_(ptr);
+          CHK_(::_pbi::VerifyUTF8(str, "grpc.ImapLoginFailedEvent.username"));
+        } else
+          goto handle_unusual;
+        continue;
+      default:
+        goto handle_unusual;
+    }  // switch
+  handle_unusual:
+    if ((tag == 0) || ((tag & 7) == 4)) {
+      CHK_(ptr);
+      ctx->SetLastTag(tag);
+      goto message_done;
+    }
+    ptr = UnknownFieldParse(
+        tag,
+        _internal_metadata_.mutable_unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(),
+        ptr, ctx);
+    CHK_(ptr != nullptr);
+  }  // while
+message_done:
+  return ptr;
+failure:
+  ptr = nullptr;
+  goto message_done;
+#undef CHK_
+}
+
+uint8_t* ImapLoginFailedEvent::_InternalSerialize(
+    uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
+  // @@protoc_insertion_point(serialize_to_array_start:grpc.ImapLoginFailedEvent)
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  // string username = 1;
+  if (!this->_internal_username().empty()) {
+    ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
+      this->_internal_username().data(), static_cast<int>(this->_internal_username().length()),
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
+      "grpc.ImapLoginFailedEvent.username");
+    target = stream->WriteStringMaybeAliased(
+        1, this->_internal_username(), target);
+  }
+
+  if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
+    target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
+        _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
+  }
+  // @@protoc_insertion_point(serialize_to_array_end:grpc.ImapLoginFailedEvent)
+  return target;
+}
+
+size_t ImapLoginFailedEvent::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:grpc.ImapLoginFailedEvent)
+  size_t total_size = 0;
+
+  uint32_t cached_has_bits = 0;
+  // Prevent compiler warnings about cached_has_bits being unused
+  (void) cached_has_bits;
+
+  // string username = 1;
+  if (!this->_internal_username().empty()) {
+    total_size += 1 +
+      ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::StringSize(
+        this->_internal_username());
+  }
+
+  return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
+}
+
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData ImapLoginFailedEvent::_class_data_ = {
+    ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
+    ImapLoginFailedEvent::MergeImpl
+};
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*ImapLoginFailedEvent::GetClassData() const { return &_class_data_; }
+
+
+void ImapLoginFailedEvent::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<ImapLoginFailedEvent*>(&to_msg);
+  auto& from = static_cast<const ImapLoginFailedEvent&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:grpc.ImapLoginFailedEvent)
+  GOOGLE_DCHECK_NE(&from, _this);
+  uint32_t cached_has_bits = 0;
+  (void) cached_has_bits;
+
+  if (!from._internal_username().empty()) {
+    _this->_internal_set_username(from._internal_username());
+  }
+  _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
+}
+
+void ImapLoginFailedEvent::CopyFrom(const ImapLoginFailedEvent& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:grpc.ImapLoginFailedEvent)
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool ImapLoginFailedEvent::IsInitialized() const {
+  return true;
+}
+
+void ImapLoginFailedEvent::InternalSwap(ImapLoginFailedEvent* other) {
+  using std::swap;
+  auto* lhs_arena = GetArenaForAllocation();
+  auto* rhs_arena = other->GetArenaForAllocation();
+  _internal_metadata_.InternalSwap(&other->_internal_metadata_);
+  ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
+      &_impl_.username_, lhs_arena,
+      &other->_impl_.username_, rhs_arena
+  );
+}
+
+::PROTOBUF_NAMESPACE_ID::Metadata ImapLoginFailedEvent::GetMetadata() const {
+  return ::_pbi::AssignDescriptors(
+      &descriptor_table_bridge_2eproto_getter, &descriptor_table_bridge_2eproto_once,
+      file_level_metadata_bridge_2eproto[58]);
+}
+
+// ===================================================================
+
 class GenericErrorEvent::_Internal {
 public:
 };
@ -14147,7 +14434,7 @@ void GenericErrorEvent::InternalSwap(GenericErrorEvent* other) {
 ::PROTOBUF_NAMESPACE_ID::Metadata GenericErrorEvent::GetMetadata() const {
  return ::_pbi::AssignDescriptors(
      &descriptor_table_bridge_2eproto_getter, &descriptor_table_bridge_2eproto_once,
-      file_level_metadata_bridge_2eproto[58]);
+      file_level_metadata_bridge_2eproto[59]);
 }

 // @@protoc_insertion_point(namespace_scope)
@ -14385,6 +14672,10 @@ template<> PROTOBUF_NOINLINE ::grpc::UsedBytesChangedEvent*
 Arena::CreateMaybeMessage< ::grpc::UsedBytesChangedEvent >(Arena* arena) {
  return Arena::CreateMessageInternal< ::grpc::UsedBytesChangedEvent >(arena);
 }
+template<> PROTOBUF_NOINLINE ::grpc::ImapLoginFailedEvent*
+Arena::CreateMaybeMessage< ::grpc::ImapLoginFailedEvent >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::grpc::ImapLoginFailedEvent >(arena);
+}
 template<> PROTOBUF_NOINLINE ::grpc::GenericErrorEvent*
 Arena::CreateMaybeMessage< ::grpc::GenericErrorEvent >(Arena* arena) {
  return Arena::CreateMessageInternal< ::grpc::GenericErrorEvent >(arena);
--- a/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/bridge.pb.h
+++ b/internal/frontend/bridge-gui/bridgepp/bridgepp/GRPC/bridge.pb.h
@ -100,6 +100,9 @@ extern GuiReadyResponseDefaultTypeInternal _GuiReadyResponse_default_instance_;
 class HasNoKeychainEvent;
 struct HasNoKeychainEventDefaultTypeInternal;
 extern HasNoKeychainEventDefaultTypeInternal _HasNoKeychainEvent_default_instance_;
+class ImapLoginFailedEvent;
+struct ImapLoginFailedEventDefaultTypeInternal;
+extern ImapLoginFailedEventDefaultTypeInternal _ImapLoginFailedEvent_default_instance_;
 class ImapSmtpSettings;
 struct ImapSmtpSettingsDefaultTypeInternal;
 extern ImapSmtpSettingsDefaultTypeInternal _ImapSmtpSettings_default_instance_;
@ -245,6 +248,7 @@ template<> ::grpc::EventStreamRequest* Arena::CreateMaybeMessage<::grpc::EventSt
 template<> ::grpc::GenericErrorEvent* Arena::CreateMaybeMessage<::grpc::GenericErrorEvent>(Arena*);
 template<> ::grpc::GuiReadyResponse* Arena::CreateMaybeMessage<::grpc::GuiReadyResponse>(Arena*);
 template<> ::grpc::HasNoKeychainEvent* Arena::CreateMaybeMessage<::grpc::HasNoKeychainEvent>(Arena*);
+template<> ::grpc::ImapLoginFailedEvent* Arena::CreateMaybeMessage<::grpc::ImapLoginFailedEvent>(Arena*);
 template<> ::grpc::ImapSmtpSettings* Arena::CreateMaybeMessage<::grpc::ImapSmtpSettings>(Arena*);
 template<> ::grpc::InternetStatusEvent* Arena::CreateMaybeMessage<::grpc::InternetStatusEvent>(Arena*);
 template<> ::grpc::KeychainEvent* Arena::CreateMaybeMessage<::grpc::KeychainEvent>(Arena*);
@ -9082,6 +9086,7 @@ class UserEvent final :
    kUserChanged = 3,
    kUserBadEvent = 4,
    kUsedBytesChangedEvent = 5,
+    kImapLoginFailedEvent = 6,
    EVENT_NOT_SET = 0,
  };

@ -9168,6 +9173,7 @@ class UserEvent final :
    kUserChangedFieldNumber = 3,
    kUserBadEventFieldNumber = 4,
    kUsedBytesChangedEventFieldNumber = 5,
+    kImapLoginFailedEventFieldNumber = 6,
  };
  // .grpc.ToggleSplitModeFinishedEvent toggleSplitModeFinished = 1;
  bool has_togglesplitmodefinished() const;
@ -9259,6 +9265,24 @@ class UserEvent final :
      ::grpc::UsedBytesChangedEvent* usedbyteschangedevent);
  ::grpc::UsedBytesChangedEvent* unsafe_arena_release_usedbyteschangedevent();

+  // .grpc.ImapLoginFailedEvent imapLoginFailedEvent = 6;
+  bool has_imaploginfailedevent() const;
+  private:
+  bool _internal_has_imaploginfailedevent() const;
+  public:
+  void clear_imaploginfailedevent();
+  const ::grpc::ImapLoginFailedEvent& imaploginfailedevent() const;
+  PROTOBUF_NODISCARD ::grpc::ImapLoginFailedEvent* release_imaploginfailedevent();
+  ::grpc::ImapLoginFailedEvent* mutable_imaploginfailedevent();
+  void set_allocated_imaploginfailedevent(::grpc::ImapLoginFailedEvent* imaploginfailedevent);
+  private:
+  const ::grpc::ImapLoginFailedEvent& _internal_imaploginfailedevent() const;
+  ::grpc::ImapLoginFailedEvent* _internal_mutable_imaploginfailedevent();
+  public:
+  void unsafe_arena_set_allocated_imaploginfailedevent(
+      ::grpc::ImapLoginFailedEvent* imaploginfailedevent);
+  ::grpc::ImapLoginFailedEvent* unsafe_arena_release_imaploginfailedevent();
+
  void clear_event();
  EventCase event_case() const;
  // @@protoc_insertion_point(class_scope:grpc.UserEvent)
@ -9269,6 +9293,7 @@ class UserEvent final :
  void set_has_userchanged();
  void set_has_userbadevent();
  void set_has_usedbyteschangedevent();
+  void set_has_imaploginfailedevent();

  inline bool has_event() const;
  inline void clear_has_event();
@ -9285,6 +9310,7 @@ class UserEvent final :
      ::grpc::UserChangedEvent* userchanged_;
      ::grpc::UserBadEvent* userbadevent_;
      ::grpc::UsedBytesChangedEvent* usedbyteschangedevent_;
+      ::grpc::ImapLoginFailedEvent* imaploginfailedevent_;
    } event_;
    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
    uint32_t _oneof_case_[1];
@ -10087,6 +10113,159 @@ class UsedBytesChangedEvent final :
 };
 // -------------------------------------------------------------------

+class ImapLoginFailedEvent final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:grpc.ImapLoginFailedEvent) */ {
+ public:
+  inline ImapLoginFailedEvent() : ImapLoginFailedEvent(nullptr) {}
+  ~ImapLoginFailedEvent() override;
+  explicit PROTOBUF_CONSTEXPR ImapLoginFailedEvent(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+
+  ImapLoginFailedEvent(const ImapLoginFailedEvent& from);
+  ImapLoginFailedEvent(ImapLoginFailedEvent&& from) noexcept
+    : ImapLoginFailedEvent() {
+    *this = ::std::move(from);
+  }
+
+  inline ImapLoginFailedEvent& operator=(const ImapLoginFailedEvent& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  inline ImapLoginFailedEvent& operator=(ImapLoginFailedEvent&& from) noexcept {
+    if (this == &from) return *this;
+    if (GetOwningArena() == from.GetOwningArena()
+  #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
+        && GetOwningArena() != nullptr
+  #endif  // !PROTOBUF_FORCE_COPY_IN_MOVE
+    ) {
+      InternalSwap(&from);
+    } else {
+      CopyFrom(from);
+    }
+    return *this;
+  }
+
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* descriptor() {
+    return GetDescriptor();
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Descriptor* GetDescriptor() {
+    return default_instance().GetMetadata().descriptor;
+  }
+  static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
+    return default_instance().GetMetadata().reflection;
+  }
+  static const ImapLoginFailedEvent& default_instance() {
+    return *internal_default_instance();
+  }
+  static inline const ImapLoginFailedEvent* internal_default_instance() {
+    return reinterpret_cast<const ImapLoginFailedEvent*>(
+               &_ImapLoginFailedEvent_default_instance_);
+  }
+  static constexpr int kIndexInFileMessages =
+    58;
+
+  friend void swap(ImapLoginFailedEvent& a, ImapLoginFailedEvent& b) {
+    a.Swap(&b);
+  }
+  inline void Swap(ImapLoginFailedEvent* other) {
+    if (other == this) return;
+  #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() != nullptr &&
+        GetOwningArena() == other->GetOwningArena()) {
+   #else  // PROTOBUF_FORCE_COPY_IN_SWAP
+    if (GetOwningArena() == other->GetOwningArena()) {
+  #endif  // !PROTOBUF_FORCE_COPY_IN_SWAP
+      InternalSwap(other);
+    } else {
+      ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
+    }
+  }
+  void UnsafeArenaSwap(ImapLoginFailedEvent* other) {
+    if (other == this) return;
+    GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
+    InternalSwap(other);
+  }
+
+  // implements Message ----------------------------------------------
+
+  ImapLoginFailedEvent* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<ImapLoginFailedEvent>(arena);
+  }
+  using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
+  void CopyFrom(const ImapLoginFailedEvent& from);
+  using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
+  void MergeFrom( const ImapLoginFailedEvent& from) {
+    ImapLoginFailedEvent::MergeImpl(*this, from);
+  }
+  private:
+  static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
+  public:
+  PROTOBUF_ATTRIBUTE_REINITIALIZES void Clear() final;
+  bool IsInitialized() const final;
+
+  size_t ByteSizeLong() const final;
+  const char* _InternalParse(const char* ptr, ::PROTOBUF_NAMESPACE_ID::internal::ParseContext* ctx) final;
+  uint8_t* _InternalSerialize(
+      uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const final;
+  int GetCachedSize() const final { return _impl_._cached_size_.Get(); }
+
+  private:
+  void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
+  void SharedDtor();
+  void SetCachedSize(int size) const final;
+  void InternalSwap(ImapLoginFailedEvent* other);
+
+  private:
+  friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
+  static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
+    return "grpc.ImapLoginFailedEvent";
+  }
+  protected:
+  explicit ImapLoginFailedEvent(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+                       bool is_message_owned = false);
+  public:
+
+  static const ClassData _class_data_;
+  const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*GetClassData() const final;
+
+  ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
+
+  // nested types ----------------------------------------------------
+
+  // accessors -------------------------------------------------------
+
+  enum : int {
+    kUsernameFieldNumber = 1,
+  };
+  // string username = 1;
+  void clear_username();
+  const std::string& username() const;
+  template <typename ArgT0 = const std::string&, typename... ArgT>
+  void set_username(ArgT0&& arg0, ArgT... args);
+  std::string* mutable_username();
+  PROTOBUF_NODISCARD std::string* release_username();
+  void set_allocated_username(std::string* username);
+  private:
+  const std::string& _internal_username() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_username(const std::string& value);
+  std::string* _internal_mutable_username();
+  public:
+
+  // @@protoc_insertion_point(class_scope:grpc.ImapLoginFailedEvent)
+ private:
+  class _Internal;
+
+  template <typename T> friend class ::PROTOBUF_NAMESPACE_ID::Arena::InternalHelper;
+  typedef void InternalArenaConstructable_;
+  typedef void DestructorSkippable_;
+  struct Impl_ {
+    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr username_;
+    mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
+  };
+  union { Impl_ _impl_; };
+  friend struct ::TableStruct_bridge_2eproto;
+};
+// -------------------------------------------------------------------
+
 class GenericErrorEvent final :
    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:grpc.GenericErrorEvent) */ {
 public:
@ -10135,7 +10314,7 @@ class GenericErrorEvent final :
               &_GenericErrorEvent_default_instance_);
  }
  static constexpr int kIndexInFileMessages =
-    58;
+    59;

  friend void swap(GenericErrorEvent& a, GenericErrorEvent& b) {
    a.Swap(&b);
@ -15992,6 +16171,80 @@ inline ::grpc::UsedBytesChangedEvent* UserEvent::mutable_usedbyteschangedevent()
  return _msg;
 }

+// .grpc.ImapLoginFailedEvent imapLoginFailedEvent = 6;
+inline bool UserEvent::_internal_has_imaploginfailedevent() const {
+  return event_case() == kImapLoginFailedEvent;
+}
+inline bool UserEvent::has_imaploginfailedevent() const {
+  return _internal_has_imaploginfailedevent();
+}
+inline void UserEvent::set_has_imaploginfailedevent() {
+  _impl_._oneof_case_[0] = kImapLoginFailedEvent;
+}
+inline void UserEvent::clear_imaploginfailedevent() {
+  if (_internal_has_imaploginfailedevent()) {
+    if (GetArenaForAllocation() == nullptr) {
+      delete _impl_.event_.imaploginfailedevent_;
+    }
+    clear_has_event();
+  }
+}
+inline ::grpc::ImapLoginFailedEvent* UserEvent::release_imaploginfailedevent() {
+  // @@protoc_insertion_point(field_release:grpc.UserEvent.imapLoginFailedEvent)
+  if (_internal_has_imaploginfailedevent()) {
+    clear_has_event();
+    ::grpc::ImapLoginFailedEvent* temp = _impl_.event_.imaploginfailedevent_;
+    if (GetArenaForAllocation() != nullptr) {
+      temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
+    }
+    _impl_.event_.imaploginfailedevent_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline const ::grpc::ImapLoginFailedEvent& UserEvent::_internal_imaploginfailedevent() const {
+  return _internal_has_imaploginfailedevent()
+      ? *_impl_.event_.imaploginfailedevent_
+      : reinterpret_cast< ::grpc::ImapLoginFailedEvent&>(::grpc::_ImapLoginFailedEvent_default_instance_);
+}
+inline const ::grpc::ImapLoginFailedEvent& UserEvent::imaploginfailedevent() const {
+  // @@protoc_insertion_point(field_get:grpc.UserEvent.imapLoginFailedEvent)
+  return _internal_imaploginfailedevent();
+}
+inline ::grpc::ImapLoginFailedEvent* UserEvent::unsafe_arena_release_imaploginfailedevent() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:grpc.UserEvent.imapLoginFailedEvent)
+  if (_internal_has_imaploginfailedevent()) {
+    clear_has_event();
+    ::grpc::ImapLoginFailedEvent* temp = _impl_.event_.imaploginfailedevent_;
+    _impl_.event_.imaploginfailedevent_ = nullptr;
+    return temp;
+  } else {
+    return nullptr;
+  }
+}
+inline void UserEvent::unsafe_arena_set_allocated_imaploginfailedevent(::grpc::ImapLoginFailedEvent* imaploginfailedevent) {
+  clear_event();
+  if (imaploginfailedevent) {
+    set_has_imaploginfailedevent();
+    _impl_.event_.imaploginfailedevent_ = imaploginfailedevent;
+  }
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:grpc.UserEvent.imapLoginFailedEvent)
+}
+inline ::grpc::ImapLoginFailedEvent* UserEvent::_internal_mutable_imaploginfailedevent() {
+  if (!_internal_has_imaploginfailedevent()) {
+    clear_event();
+    set_has_imaploginfailedevent();
+    _impl_.event_.imaploginfailedevent_ = CreateMaybeMessage< ::grpc::ImapLoginFailedEvent >(GetArenaForAllocation());
+  }
+  return _impl_.event_.imaploginfailedevent_;
+}
+inline ::grpc::ImapLoginFailedEvent* UserEvent::mutable_imaploginfailedevent() {
+  ::grpc::ImapLoginFailedEvent* _msg = _internal_mutable_imaploginfailedevent();
+  // @@protoc_insertion_point(field_mutable:grpc.UserEvent.imapLoginFailedEvent)
+  return _msg;
+}
+
 inline bool UserEvent::has_event() const {
  return event_case() != EVENT_NOT_SET;
 }
@ -16343,6 +16596,60 @@ inline void UsedBytesChangedEvent::set_usedbytes(int64_t value) {

 // -------------------------------------------------------------------

+// ImapLoginFailedEvent
+
+// string username = 1;
+inline void ImapLoginFailedEvent::clear_username() {
+  _impl_.username_.ClearToEmpty();
+}
+inline const std::string& ImapLoginFailedEvent::username() const {
+  // @@protoc_insertion_point(field_get:grpc.ImapLoginFailedEvent.username)
+  return _internal_username();
+}
+template <typename ArgT0, typename... ArgT>
+inline PROTOBUF_ALWAYS_INLINE
+void ImapLoginFailedEvent::set_username(ArgT0&& arg0, ArgT... args) {
+ 
+ _impl_.username_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:grpc.ImapLoginFailedEvent.username)
+}
+inline std::string* ImapLoginFailedEvent::mutable_username() {
+  std::string* _s = _internal_mutable_username();
+  // @@protoc_insertion_point(field_mutable:grpc.ImapLoginFailedEvent.username)
+  return _s;
+}
+inline const std::string& ImapLoginFailedEvent::_internal_username() const {
+  return _impl_.username_.Get();
+}
+inline void ImapLoginFailedEvent::_internal_set_username(const std::string& value) {
+  
+  _impl_.username_.Set(value, GetArenaForAllocation());
+}
+inline std::string* ImapLoginFailedEvent::_internal_mutable_username() {
+  
+  return _impl_.username_.Mutable(GetArenaForAllocation());
+}
+inline std::string* ImapLoginFailedEvent::release_username() {
+  // @@protoc_insertion_point(field_release:grpc.ImapLoginFailedEvent.username)
+  return _impl_.username_.Release();
+}
+inline void ImapLoginFailedEvent::set_allocated_username(std::string* username) {
+  if (username != nullptr) {
+    
+  } else {
+    
+  }
+  _impl_.username_.SetAllocated(username, GetArenaForAllocation());
+#ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  if (_impl_.username_.IsDefault()) {
+    _impl_.username_.Set("", GetArenaForAllocation());
+  }
+#endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
+  // @@protoc_insertion_point(field_set_allocated:grpc.ImapLoginFailedEvent.username)
+}
+
+// -------------------------------------------------------------------
+
 // GenericErrorEvent

 // .grpc.ErrorCode code = 1;
@ -16484,6 +16791,8 @@ inline void GenericErrorEvent::set_code(::grpc::ErrorCode value) {

 // -------------------------------------------------------------------

+// -------------------------------------------------------------------
+

 // @@protoc_insertion_point(namespace_scope)

--- a/internal/frontend/bridge-gui/bridgepp/bridgepp/User/User.cpp
+++ b/internal/frontend/bridge-gui/bridgepp/bridgepp/User/User.cpp
@ -34,7 +34,8 @@ SPUser User::newUser(QObject *parent) {
 /// \param[in] parent The parent object.
 //****************************************************************************************************************************************************
 User::User(QObject *parent)
-    : QObject(parent) {
+    : QObject(parent)
+    , imapFailureCooldownEndTime_(QDateTime::currentDateTime()) {

 }

@ -311,4 +312,24 @@ QString User::stateToString(UserState state) {
 }


+//****************************************************************************************************************************************************
+/// We display a notification and pop the application window if an IMAP client tries to connect to a signed out account, but we do not want to
+/// do it repeatedly, as it's an intrusive action. This function let's you define a period of time during which the notification should not be
+/// displayed.
+///
+/// \param durationMSecs The duration of the period in milliseconds.
+//****************************************************************************************************************************************************
+void User::startImapLoginFailureCooldown(qint64 durationMSecs) {
+    imapFailureCooldownEndTime_ = QDateTime::currentDateTime().addMSecs(durationMSecs);
+}
+
+
+//****************************************************************************************************************************************************
+/// \return true if we currently are in a cooldown period for the notification
+//****************************************************************************************************************************************************
+bool User::isInIMAPLoginFailureCooldown() const {
+    return QDateTime::currentDateTime() < imapFailureCooldownEndTime_;
+}
+
+
 } // namespace bridgepp
--- a/internal/frontend/bridge-gui/bridgepp/bridgepp/User/User.h
+++ b/internal/frontend/bridge-gui/bridgepp/bridgepp/User/User.h
@ -74,6 +74,8 @@ public: // member functions.
    User &operator=(User &&) = delete; ///< Disabled move assignment operator.
    void update(User const &user); ///< Update the user.
    Q_INVOKABLE QString primaryEmailOrUsername() const; ///< Return the user primary email, or, if unknown its username.
+    void startImapLoginFailureCooldown(qint64 durationMSecs); ///< Start the user cooldown period for the IMAP login attempt while signed-out notification.
+    bool isInIMAPLoginFailureCooldown() const; ///< Check if the user in a IMAP login failure notification.

 public slots:
    // slots for QML generated calls
@ -137,6 +139,7 @@ private: // member functions.
    User(QObject *parent); ///< Default constructor.

 private: // data members.
+    QDateTime imapFailureCooldownEndTime_; ///< The end date/time for the IMAP login failure notification cooldown period.
    QString id_; ///< The userID.
    QString username_; ///< The username
    QString password_; ///< The IMAP password of the user.
--- a/internal/frontend/cli/frontend.go
+++ b/internal/frontend/cli/frontend.go
@ -261,7 +261,7 @@ func New(bridge *bridge.Bridge, restarter *restarter.Restarter, eventCh <-chan e
 	return fe
 }

-func (f *frontendCLI) watchEvents(eventCh <-chan events.Event) { // nolint:funlen
+func (f *frontendCLI) watchEvents(eventCh <-chan events.Event) { // nolint:funlen,gocyclo
 	// GODT-1949: Better error events.
 	for _, err := range f.bridge.GetErrors() {
 		switch {
@ -303,6 +303,9 @@ func (f *frontendCLI) watchEvents(eventCh <-chan events.Event) { // nolint:funle

 			f.Printf("User %s received a bad event and was logged out.\n", user.Username)

+		case events.IMAPLoginFailed:
+			f.Printf("An IMAP login attempt failed for user %v\n", event.Username)
+
 		case events.UserAddressUpdated:
 			user, err := f.bridge.GetUserInfo(event.UserID)
 			if err != nil {
--- a/internal/frontend/grpc/bridge.pb.go
+++ b/internal/frontend/grpc/bridge.pb.go
--- a/internal/frontend/grpc/bridge.proto
+++ b/internal/frontend/grpc/bridge.proto
@ -448,7 +448,8 @@ message UserEvent {
    UserDisconnectedEvent userDisconnected = 2;
    UserChangedEvent userChanged = 3;
    UserBadEvent userBadEvent = 4;
-    UsedBytesChangedEvent  usedBytesChangedEvent= 5;
+    UsedBytesChangedEvent  usedBytesChangedEvent = 5;
+    ImapLoginFailedEvent imapLoginFailedEvent = 6;
  }
 }

@ -474,6 +475,10 @@ message UsedBytesChangedEvent {
  int64 usedBytes = 2;
 }

+message ImapLoginFailedEvent {
+  string username = 1;
+}
+
 //**********************************************************
 // Generic errors
 //**********************************************************
--- a/internal/frontend/grpc/event_factory.go
+++ b/internal/frontend/grpc/event_factory.go
@ -181,6 +181,10 @@ func NewUsedBytesChangedEvent(userID string, usedBytes int) *StreamEvent {
 	return userEvent(&UserEvent{Event: &UserEvent_UsedBytesChangedEvent{UsedBytesChangedEvent: &UsedBytesChangedEvent{UserID: userID, UsedBytes: int64(usedBytes)}}})
 }

+func newIMAPLoginFailedEvent(username string) *StreamEvent {
+	return userEvent(&UserEvent{Event: &UserEvent_ImapLoginFailedEvent{ImapLoginFailedEvent: &ImapLoginFailedEvent{Username: username}}})
+}
+
 func NewGenericErrorEvent(errorCode ErrorCode) *StreamEvent {
 	return genericErrorEvent(&GenericErrorEvent{Code: errorCode})
 }
--- a/internal/frontend/grpc/service.go
+++ b/internal/frontend/grpc/service.go
@ -309,6 +309,9 @@ func (s *Service) watchEvents() {
 		case events.UsedSpaceChanged:
 			_ = s.SendEvent(NewUsedBytesChangedEvent(event.UserID, event.UsedSpace))

+		case events.IMAPLoginFailed:
+			_ = s.SendEvent(newIMAPLoginFailedEvent(event.Username))
+
 		case events.UserDeauth:
 			// This is the event the GUI cares about.
 			_ = s.SendEvent(NewUserChangedEvent(event.UserID))