Betterbird full changelog

Fixed in this version:
FIXED - Status text sometimes not updating correctly in status bar
FIXED - Newly created feeds and news account not shown in unified folders. Account root now focused in 3pane after creation. - Bug 2082672
FIXED - Inconsistent feedback when dragging OS folder to compose window - Bug 2085533
FIXED - Please Wait... never cleared in IMAP and news subscribe dialogues - Bug 2085557

Fixed in this version:
FIXED - Regression: Activity Indicator in Unified Toolbar and progress bar in status bar for downloading messages, compacting, etc. not working
FIXED - Linux: Wayland content offset ("phantom shadow") after window is restored after being "minimised to tray" - GitHub #399
FIXED - "Phantom messages" (Unread, dated 1967/1970, empty details) when archiving in threaded unified folder
FIXED - Compose auto-save moved caret from subject to body or vice versa under certain circumstances
EXPERIMENTAL FIX - Windows: Sporadic empty new mail alert on Windows when Betterbird-native XUL alert is used - GitHub #599
EXPERIMENTAL FIX - Linux Flatpak: Interoperability with KeepassXC - GitHub Flatpak #340

Fixed in this version:
In this release we're only shipping security fixes, see this Mozilla page for details.
Features and fixes exclusive to Betterbird (new in the 140 series):
NEW - We're now shipping a language pack for Portuguese from Portugal (pt-PT) (140.10.0)
CHANGED - CardDAV address books now show a cloud icon to distinguish them easily from local address books (140.10.0)
FIXED - PGP/MIME signed and encrypted messages weren't correctly decrypted permanently if they had separate MIME layers for signing and encryption. That was the standard before Thunderbird/Betterbird 115, or it can still be enforced by setting preference mail.openpgp.separate_mime_layers to true. Forwarding such decrypted messages also didn't work correctly when the message had an attachment (140.10.0) - Bug 1866822 Bug 1843860
NEW - "Open in Folder" button next to link in calendar event/task dialogue if the link points to an associated message (140.9.0)
CHANGED - Messages scheduled for delayed sending (preferences mailnews.sendInBackground and mailnews.sendInBackground.DelayMinutes) will not be sent as scheduled if "edit message as new" is used on them. That avoids sending an old version of the message while a new version is being prepared. (140.9.0)
CHANGED - Localised versions no longer ship the Mozilla English dictionary to allow users to install a different dictionary, like this one (140.9.0)
FIXED - Link associated with Calendar event/task sometimes not displayed (140.9.0) - Bug 2021848
FIXED - Incorrect ENVID for DSN-aware servers when sending from Outbox (140.9.0) - Bug 2018473
NEW - Additionally to the existing preference mailnews.sendInBackground, there is now mailnews.sendInBackground.DelayMinutes to delay background sending by a certain number of minutes. Note the following: When quitting the application, any messages in the Outbox will remain unsent until the application is started again. (140.8.0)
NEW - Windows binaries are now signed with a certificate fr

Fixed in this version:
In this release we're only shipping security fixes, see this Mozilla page for details.
Features and fixes exclusive to Betterbird (new in the 140 series):
NEW - We're now shipping a language pack for Portuguese from Portugal (pt-PT) (140.10.0)
CHANGED - CardDAV address books now show a cloud icon to distinguish them easily from local address books (140.10.0)
FIXED - PGP/MIME signed and encrypted messages weren't correctly decrypted permanently if they had separate MIME layers for signing and encryption. That was the standard before Thunderbird/Betterbird 115, or it can still be enforced by setting preference mail.openpgp.separate_mime_layers to true. Forwarding such decrypted messages also didn't work correctly when the message had an attachment (140.10.0) - Bug 1866822 Bug 1843860
NEW - "Open in Folder" button next to link in calendar event/task dialogue if the link points to an associated message (140.9.0)
CHANGED - Messages scheduled for delayed sending (preferences mailnews.sendInBackground and mailnews.sendInBackground.DelayMinutes) will not be sent as scheduled if "edit message as new" is used on them. That avoids sending an old version of the message while a new version is being prepared. (140.9.0)
CHANGED - Localised versions no longer ship the Mozilla English dictionary to allow users to install a different dictionary, like this one (140.9.0)
FIXED - Link associated with Calendar event/task sometimes not displayed (140.9.0) - Bug 2021848
FIXED - Incorrect ENVID for DSN-aware servers when sending from Outbox (140.9.0) - Bug 2018473
NEW - Additionally to the existing preference mailnews.sendInBackground, there is now mailnews.sendInBackground.DelayMinutes to delay background sending by a certain number of minutes. Note the following: When quitting the application, any messages in the Outbox will remain unsent until the application is started again. (140.8.0)
NEW - Windows binaries are now signed with a certificate fr

Fixed in this version:
NEW - We're now shipping a language pack for Portuguese from Portugal (pt-PT)
CHANGED - CardDAV address books now show a cloud icon to distinguish them easily from local address books
FIXED - PGP/MIME signed and encrypted messages weren't correctly decrypted permanently if they had separate MIME layers for signing and encryption. That was the standard before Thunderbird/Betterbird 115, or it can still be enforced by setting preference mail.openpgp.separate_mime_layers to true. Forwarding such decrypted messages also didn't work correctly when the message had an attachment - Bug 1866822 Bug 1843860

Fixed in this version:
NEW - "Open in Folder" button next to link in calendar event/task dialogue if the link points to an associated message
CHANGED - Messages scheduled for delayed sending (preferences mailnews.sendInBackground and mailnews.sendInBackground.DelayMinutes) will not be sent as scheduled if "edit message as new" is used on them. That avoids sending an old version of the message while a new version is being prepared.
CHANGED - Localised versions no longer ship the Mozilla English dictionary to allow users to install a different dictionary, like this one
FIXED - Link associated with Calendar event/task sometimes not displayed - Bug 2021848
FIXED - Incorrect ENVID for DSN-aware servers when sending from Outbox - Bug 2018473
Features and fixes exclusive to Betterbird (new in the 140 series):
NEW - Additionally to the existing preference mailnews.sendInBackground, there is now mailnews.sendInBackground.DelayMinutes to delay background sending by a certain number of minutes. Note the following: When quitting the application, any messages in the Outbox will remain unsent until the application is started again. (140.8.0)
NEW - Windows binaries are now signed with a certificate from the recognised Certificate Authority Certum (140.8.0)
NEW - Preference mail.folderpane.unified_include_subfolders to allow showing subfolder of unified folders although they are not part of the virtual folder definition. This was the state before version 115. (140.8.0)
NEW - Web search (Search PreferredSearchEngine for "...") now available on the context menu in the compose window (140.8.0)
FIXED - "After junk classification" filters didn't run on new messages in the IMAP inbox if those messages were already read on a different (mobile) device. Relevant preference mail.imap.filter_on_new to enable filtering read messages in general. (140.8.0)
CHANGED - The Activity Manager now uses a grey icon when no messages were downloaded (140.7.1)
FIXED

Fixed in this version:
CHANGED - The Activity Manager now uses a grey icon when no messages were downloaded
FIXED - Problems with "after sending" filters on IMAP folders under certain circumstances - Bug 2008314
Features and fixes exclusive to Betterbird (new in the 140 series):
NEW - Primary password and mail password prompts now have a button to reveal the password (140.7.0)
MITIGATED - Problems with "after sending" filters on IMAP folders under certain circumstances (140.7.0) - Bug 2008314
FIXED - Archive folder didn't have the correct icon under some circumstances (140.7.0)
FIXED - Empty sub-menu of Recent Destinations and Favourites (140.7.0) - Bug 2008314
NEW - Dark reader switch for the compose window (140.6.0-bb16)
NEW - Preference calendar.itip.eventDescriptionAsEmailBody to add event description to invitation e-mail body (140.6.0-bb16) - Bug 19016781
NEW - Address book Categories, working for local address books and CardDAV address books supporting vCard 4.0 (140.6.0-bb16) - Bug 75711 Bug 1764184 and 15 more duplicates
CHANGED - The "Recent Destinations" folder list now has a short MRU list above, and a longer alphabetical list below. This also applies to the filter editor. (140.6.0-bb16) - Bug 2000453
CHANGED - Re: prefix now maintained when a reply is dragged to the compose window as message attachment (140.6.0-bb16)
FIXED - Erroneous parsing of command line arguments that contained commas, commas in filenames in the attachment parameter need to be escaped by a backslash, example: -compose "attachment='C:UsersBB-loverfile,part.txt'" (140.6.0-bb16) - Bug 900117
FIXED - "Caret confusion", use of preference editor.white_space_normalization.blink_compatible no longer necessary (140.6.0-bb16) - Bug 2005895 Bug 2007618
FIXED - Embedded SVG images sometimes not displayed correctly (140.6.0-bb16) - Bug 1936022 Bug 2005871
FIXED - Potential issue when displaying PGP messages while the Global Search and Indexer is

Fixed in this version:
CHANGED - The Activity Manager now uses a grey icon when no messages were downloaded
FIXED - Problems with "after sending" filters on IMAP folders under certain circumstances - Bug 2008314
Features and fixes exclusive to Betterbird (new in the 140 series):
NEW - Primary password and mail password prompts now have a button to reveal the password (140.7.0)
MITIGATED - Problems with "after sending" filters on IMAP folders under certain circumstances (140.7.0) - Bug 2008314
FIXED - Archive folder didn't have the correct icon under some circumstances (140.7.0)
FIXED - Empty sub-menu of Recent Destinations and Favourites (140.7.0) - Bug 2008314
NEW - Dark reader switch for the compose window (140.6.0-bb16)
NEW - Preference calendar.itip.eventDescriptionAsEmailBody to add event description to invitation e-mail body (140.6.0-bb16) - Bug 19016781
NEW - Address book Categories, working for local address books and CardDAV address books supporting vCard 4.0 (140.6.0-bb16) - Bug 75711 Bug 1764184 and 15 more duplicates
CHANGED - The "Recent Destinations" folder list now has a short MRU list above, and a longer alphabetical list below. This also applies to the filter editor. (140.6.0-bb16) - Bug 2000453
CHANGED - Re: prefix now maintained when a reply is dragged to the compose window as message attachment (140.6.0-bb16)
FIXED - Erroneous parsing of command line arguments that contained commas, commas in filenames in the attachment parameter need to be escaped by a backslash, example: -compose "attachment='C:UsersBB-loverfile,part.txt'" (140.6.0-bb16) - Bug 900117
FIXED - "Caret confusion", use of preference editor.white_space_normalization.blink_compatible no longer necessary (140.6.0-bb16) - Bug 2005895 Bug 2007618
FIXED - Embedded SVG images sometimes not displayed correctly (140.6.0-bb16) - Bug 1936022 Bug 2005871
FIXED - Potential issue when displaying PGP messages while the Global Search and Indexer is

Fixed in this version:
NEW - Primary password and mail password prompts now have a button to reveal the password
MITIGATED - Problems with "after sending" filters on IMAP folders under certain circumstances - Bug 2008314
FIXED - Archive folder didn't have the correct icon under some circumstances
FIXED - Empty sub-menu of Recent Destinations and Favourites - Bug 2008314
Features and fixes exclusive to Betterbird (new in the 140 series):
NEW - Dark reader switch for the compose window (140.6.0-bb16)
NEW - Preference calendar.itip.eventDescriptionAsEmailBody to add event description to invitation e-mail body (140.6.0-bb16) - Bug 19016781
NEW - Address book Categories, working for local address books and CardDAV address books supporting vCard 4.0 (140.6.0-bb16) - Bug 75711 Bug 1764184 and 15 more duplicates
CHANGED - The "Recent Destinations" folder list now has a short MRU list above, and a longer alphabetical list below. This also applies to the filter editor. (140.6.0-bb16) - Bug 2000453
CHANGED - Re: prefix now maintained when a reply is dragged to the compose window as message attachment (140.6.0-bb16)
FIXED - Erroneous parsing of command line arguments that contained commas, commas in filenames in the attachment parameter need to be escaped by a backslash, example: -compose "attachment='C:UsersBB-loverfile,part.txt'" (140.6.0-bb16) - Bug 900117
FIXED - "Caret confusion", use of preference editor.white_space_normalization.blink_compatible no longer necessary (140.6.0-bb16) - Bug 2005895 Bug 2007618
FIXED - Embedded SVG images sometimes not displayed correctly (140.6.0-bb16) - Bug 1936022 Bug 2005871
FIXED - Potential issue when displaying PGP messages while the Global Search and Indexer is enabled. Potential regression from fix for indexing S/MIME-encrypted messages in 140.6.0. (140.6.0-bb16)
FIXED - Some menu popups not showing checkmarks, especially on the address book list display options (140.6.0-bb16)
FIXED - French loc

NEW - Dark reader switch for the compose window
NEW - Preference calendar.itip.eventDescriptionAsEmailBody to add event description to invitation e-mail body - Bug 19016781
NEW - Address book Categories, working for local address books and CardDAV address books supporting vCard 4.0 - Bug 75711 Bug 1764184 and 15 more duplicates
CHANGED - The "Recent Destinations" folder list now has a short MRU list above, and a longer alphabetical list below. This also applies to the filter editor. - Bug 2000453
CHANGED - Re: prefix now maintained when a reply is dragged to the compose window as message attachment
FIXED - Erroneous parsing of command line arguments that contained commas, commas in filenames in the attachment parameter need to be escaped by a backslash, example: -compose "attachment='C:UsersBB-loverfile,part.txt'" - Bug 900117
FIXED - "Caret confusion", use of preference editor.white_space_normalization.blink_compatible no longer necessary - Bug 2005895 Bug 2007618
FIXED - Embedded SVG images sometimes not displayed correctly - Bug 1936022 Bug 2005871
FIXED - Potential issue when displaying PGP messages while the Global Search and Indexer is enabled. Potential regression from fix for indexing S/MIME-encrypted messages in 140.6.0.
FIXED - Some menu popups not showing checkmarks, especially on the address book list display options
FIXED - French localisation had missing strings - Bug 200741022