GODT-829 fix apple mail subfolders

Changelog.md

@@ -4,9 +4,12 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 
 ## Unreleased
 
+### Fixed
+* GODT-829 Remove `NoInferior` to display sub-folders in apple mail.
+
 ## [Bridge 1.4.4] Forth
 
-### Fixed
+### 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
@@ -17,7 +20,7 @@ Changelog [format](http://keepachangelog.com/en/1.0.0/)
 ### Changed
 * Reverted sending IMAP updates to be not blocking again.
 
-### Fixed
+### Fixed
 * GODT-783 Settings flags by FLAGS (not using +/-FLAGS) do not change spam state.
 
 

internal/imap/mailbox.go

@@ -80,7 +80,10 @@ func (im *imapMailbox) Info() (*imap.MailboxInfo, error) {
 }
 
 func (im *imapMailbox) getFlags() []string {
-	flags := []string{imap.NoInferiorsAttr} // Subfolders are not yet supported by API.
+	flags := []string{}
+	if !im.storeMailbox.IsFolder() || im.storeMailbox.IsSystem() {
+		flags = append(flags, imap.NoInferiorsAttr) // Subfolders are not supported for System or Label
+	}
 	switch im.storeMailbox.LabelID() {
 	case pmapi.SentLabel:
 		flags = append(flags, specialuse.Sent)