De Mozilla Foundation heeft versie 140.0 van Thunderbird uitgebracht. Thunderbird is een opensourceclient voor e-mail en nieuwsgroepen met ondersteuning voor verschillende mail- en newsaccounts. Verder zijn er een spamfilter, spellingscontrole, kalender en adresboek, en heeft het een aanpasbaar uiterlijk. Thunderbird is beschikbaar in twee verschillende versies, die beide als stabiel worden aangeduid. De eerste wordt vaker voorzien van nieuwe functionaliteit en wordt als Release-versie aangeboden; de andere, de Extra Support Release-versie, wordt alleen van bugfixes en stabiliteitsverbeteringen voorzien. In deze uitgave zijn de volgende veranderingen en verbeteringen aangebracht:
What’s NewWhat’s Changed
- Added 'Mark as Spam' and 'Mark as Starred' actions to mail notifications
- Account Hub enabled by default for second email setup
What’s Fixed
- Some generic appearance settings were moved from General to Appearance section
- Folder cache entries were not cleared when an account was removed
- Selecting a folder could fail due to an underlying error
- Thunderbird could crash when copying a local folder to IMAP
- "File > Save As > Template" and "Reply With Template" filter actions failed
- View Message Source no longer worked for multiple selected messages
- Creating a new mail account from the menu bar in a message window failed
- Feed subscriptions were broken
- List-ID contents could be selected but not copied via context menu
- Some webpage links could be forced to open in Thunderbird
- Thunderbird could crash when scrolling folders using up/down arrow keys
- "Secret Key ID" field did not sanitize input, causing draft encryption to fail
- Could not send signed/encrypted messages in some setups due to regression
- Repaired folders were not reindexed for search after repair
- Messages with multiple authors or no author were not indexed for global search
- Messages from authors without email address were not indexed for global search
- Creating a link from selected text did not work with advanced properties selected
- Spellcheck no longer highlighted misspelled words in the compose window
- macOS system notifications worked but email alerts could not be disabled separately
- Setting different archiving options for multiple identities did not work
- Thunderbird could crash in debug build when adding a news account
- Moving back in the calendar import dialog could break the Continue button
- Add-ons: Optional permission prompts for WebExtensions displayed wrong permissions
- Density and Font Size menu item buttons used incorrect icons
- Auto-unsubscribed dialog was intrusive, reappeared, and could not be ignored
- Thunderbird could show a misleading error message on IMAP login failure
- Modal alerts shown for expired articles when downloading news for offline use
- Status bar message did not include newsgroup name along with the account name
- Reconnecting to an NNTP server was potentially not possible
- "About" dialog incorrectly displayed "Daily" rather than "Beta"
- Links in calendar event description were unreadable in dark mode
- Clicking a 'mid:' link in event created from message did not work
- Unable to subscribe to more than one network calendar
- Visual and UX improvements
- Security fixes
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