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Join UsVersion 102.0beta, first offered to channel users on June 1, 2022
Profile Import/Export UI refreshed and moved to a tab
Multiple active spelling dictionaries now supported in compose window
Add dictionaries
item added to Spelling
button in compose window
SMTP client will now ignore socket errors after QUIT
command is sen
OpenPGP Key Manager
dialog layout improvements
Writing OpenPGP keyring data will block Thunderbird shutdown to prevent data loss
Improvements to new Address Book UI
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"Old" Address Book user interface removed
Address book contact data is now stored in the vCard format. The change isn't backwards-compatible; backups are stored in the profile directory.
Tab icons updated
[macOS] Alt+Up
and Alt+Down
keyboard shortcuts removed from Spaces Toolbar; Use Fn+RightArrow
and Fn+LeftArrow
Default install directory for Thunderbird Beta changed to not conflict with release versions
Addon Search will no longer display addons that are incompatible
Searching from the Themes
page of Addon Manager will now limit search results to only include themes
Default action of Edit
button in recurring event dialog changed to display submenu
Dropdowns for select and autocomplete fields in browser-based login forms were not shown
Contacts sidebar context menu button had a misleading highlighted border, suggesting it had focus
Configuring multiple SMTP accounts using the same server was not possible
Display problems with very long subject lines in message panel fixed
"More" recipients button in message header was difficult to read with some themes
"Tags" submenu was disabled in standalone message window after opening a message from an .eml file
IMAP folder subscription changes on servers using OAuth2 authentication were not reflected in folder pane until Thunderbird was restarted
Empty Trash on Exit
did not work with IMAP accounts using OAuth2 authentication
IMAP server hostname changes were not reflected in Folder Properties
dialog
Drag and drop of attachable URLs onto compose window handling improved
Account types provided by an addon were not available in Account Setup
with a new profile
Addons automatically updated when Thunderbird updated despite Addon updates being turned off
"Chat" and "Addons and Themes" icons were not shown in the toolbar Customize
dialog
Chat room icons were not shown in notifications
Matrix messages with "notify" push rule action were not marked as highlights
Accepting a recurrence exception to an event accepted event associated with the original recurring event rather than the exception
Declining an instance of a recurring event sent a notification email with the previous (attending) status
Event modifications in a remote calendar while in offline mode were not synchronized after going back online
Colors from Linux GTK theme were not used when Thunderbird's System Theme was active
Various UI style and theme fixes: Profile Manager, Edit Contact panel, Addons Permission panel, Event Summary
Various visual and theme improvements
Thunderbird will not try to use OTR Chat encryption if the protocol supports native encryption
CC
disclosure button in the Compose Window incorrectly showed the To
keyboard shortcut
Changes to the Organization field in a VCard were not always saved
Message Header toolbar buttons will not display a border when set to show icons only
Edit contact form UX improvements
No tooltip to see full addresses on an email was shown
Primary password dialog did not adapt to Dark Mode on startup
Active main menu items were difficult to read on Windows
Thunderbird permitted inline editing of read-only event titles
Buttons on "Update Failed" popup now open Beta and Release specific pages on Thunderbird website
Contact websites now displayed in separate section
OpenPGP Key Assistant dialog style updated
Drag and drop of a message onto a compose window showed 0-byte attachment named Attached Message Part
Import/Export tab displayed wrong icon; documentation links updated
macOS dialog style fixes
When automatically attaching OpenPGP keys to emails, Thunderbird will not send signatures
Inline attachment filenames now sent without data-uri encoding
Thunderbird will not support "Secondly" or "Minutely" recurring calendar events
Non-square contact photos appeared distorted in the message header pane
Address book search improved
Contact Notes field contents could overflow
Matrix backscroll behavior improved
Calendar file import dialog title was not localized
A notification bar in the compose window will be displayed if encryption is possible but not enabled
Addressbook UI will update if a contact changes while being displayed or edited
"Removed Account" confirmation dialog had incorrectly aligned "Ok" button
Addressbook updates and improvements
Clicking a URL in an RSS feed opened the link twice
Various visual and theme improvements
Addressbook UX and accessibility improvements over previous betas
Mailbox corruption could occur when Allow antivirus clients to quarantine individual incoming messages
was enabled on IMAP accounts
"Open message in containing folder" did not work for standalone windows
No checkmark for "My OpenPGP Public Key" menu item in compose window "Attach" toolbar button was shown when sending an OpenPGP encrypted message
OpenPGP Key Assistant "Learn more" links did not work
"Encrypt" button became enabled when sending a message even though it should not
Recipients were not de-duplicated before sending, leading to sending errors
Sending a message with non-ascii characters in recipient local parts failed unexpectedly when the server did not support SMTPUTF8
Thunderbird started with a new profile was unusable on systems that use short timezone codes
Message pane size varied when Thunderbird was started with a new profile
Profile import did not import customized tag names
Context menus in "Filter Rules" did not follow dark theme
Restore "nickname" field on contact edit form
Restore "Required Information Missing" dialog when saving a contact
"New CardDAV Address Book" dialog did not resize after detecting available address books
Matrix conversations that changed type had in invalid state and did not load
Some encrypted Matrix messages never displayed decrypted
Multiple "Invite Attendees" interface UX improvements
Calendar view reloaded when switching tabs
Various icons were not visible
Back/Forward keyboard shortcuts added to Addon Manager
Performance improved when moving messages between IMAP folders
Addon incompatibility notification displayed when it should not be
Theme improvements