Quote:Thunderbird Supernova 115.8.0​

New​

• Added option to show packet dump when OpenPGP fails to decrypt
  

 Fixed​

• Thunderbird slowed down significantly when opening email files (.eml)
  
• Inbox view intermittently reverted to default view after moving or deleting messages
  
• Size of collapsed folders in folder pane did not include size of subfolders
  
• Hovering over folder does not always expand subfolders
  
• Switching to thread pane of a folder using keyboard navigation did not focus top message
  
• Clicking "Sent unsent messages" in Outbox context menu while in offline mode did not prompt user to go online
  
• Mail tab-specific Unified Toolbar buttons received focus incorrectly
  
• Quick Filter settings did not persist when Quick Filter bar was turned off
  
• Quick Filters were unusually slow
  
• OpenPGP Key Manager filtering did not work
  
• OpenPGP sometimes attempted to decrypt message with incorrect key
  
• Autoconfig failed on servers that did not support OAuth2
  
• Opening different attachments with the same name in different messages could cause attachment files to become conflated
  
• Overflowed attachment list could not be scrolled
  
• Passwords disappeared from password manager list after applying and clearing filters
  
• Cookies in cookie manager list disappeared after applying and then clearing filters
  
• Security fixes
  

Quote:Thunderbird Supernova 115.8.1​

Fixed​

• Settings: Updating tags failed if Automatic Updates were disabled
  
• Size of collapsed folders in folder pane did not include size of subfolders
  
• Reversing sort order of Grouped By views in quick search did not reverse
  
• Removing threaded messages in a unified folder sometimes resulted in an incorrect number of levels in the thread
  
• Thread collapsing did not behave correctly when copying thread messages in multi-folder view
  
• S/MIME encryption failed to encrypt if unsupported certificate type was encountered
  
• Decrypting a copy of an S/MIME encrypted, opaque-signed message created an unreadable message
  
• Thunderbird sometimes changed the subject of messages selected while simultaneously decrypting a large PGP-encrypted message
  
• "Quote message" menu item in compose window did not work when replying to message opened in separate tab
  
• Toolbar customization window contents overflowed the window width
  
• Security fixes
  

Quote:Thunderbird Supernova 115.9.0​:

Fixed​

• Opened ignored messages in a message thread/subthread were not marked as read in IMAP folders
  
• Multi-language spellcheck sometimes skipped languages
  
• Thread tree did not update when live language switching
  
• Visual improvements to "Reorder Attachments" popup
  
• Sort order was sometimes incorrect in Grouped By views
  
• Selecting "Match all messages" in Filter Rules dialog did not disable all search criteria
  
• S/MIME-only signed messages sometimes incorrectly displayed signature as invalid
  
• OpenPGP keys uploaded to an HKP keyserver were sent with the wrong Content-Type header
  
• Keyboard navigation within search toolbar did not work
  
• Flatpak builds only had the en-US spell check dictionary available
  
• Security fixes
  

Quote:Thunderbird Supernova 115.10.0​

Fixed​

• Creating a tag in General Settings with a number as the tag name did not work
  
• Quick Filter button selections did not persist after restart
  
• Collapsing and expanding message list headers sometimes caused header to scroll out of view
  
• Single message with no children inside a parent thread sometimes displayed incorrectly as a thread with a duplicate of itself as its child
  
• "Get selected messages" menu items did not work
  
• "Download and Sync Messages" dialog was too short when using Russian locale, obscuring OK button
  
• After changing password on an IMAP account, the account could become locked due to too many failed login attempts
  
• Retrieving multiline POP3 message from server failed if message chunk ended in newline instead of carriage return and newline
  
• IMAP, POP3, and SMTP Exchange autoconfiguration did not support encryption configuration
  
• Non-empty address book search bar interfered with displaying/editing contacts
  
• Deleting attendees from "Invite Attendees" view removed attendees from view, but not from invite
  
• Splitter arrow between task list and task description did not behave as expected
  
• Performance improvements and code cleanup
  
• Security fixes
  

Quote:Thunderbird Supernova 115.10.1​

Fixed​

• Thunderbird processes did not exit cleanly; user intervention was required via task manager
  

 Known Issues​Unresolved

• After changing password on an IMAP account, the account could become locked due to too many failed login attempts
  

Quote:Mozilla Thunderbird 125.0:

Homepage
Changelog
Download | 32-Bit en-US
Download | 64-Bit en-US
Download | 32-Bit All Languages
Download | 64-Bit All Languages
Download | Portable
Addons

Quote:Thunderbird Supernova 115.10.2​

Changed​

• Update channel for Thunderbird 115 is now ESR.
  

Quote:Thunderbird Supernova 115.11.0​

Version 115.11.0, first offered to channel users on May 14, 2024

Fixed​

• Splitter arrow between task list and task description did not behave as expected
  
• Calendar Event Attendees dialog had incorrectly sized rows
  
• Security fixes
  

Quote:Thunderbird Supernova 115.11.1 should be already available to download manually from homepage and via the software UI.

https://www.thunderbird.net/en-US/thunderbird/115.11.1/releasenotes/

Quote:Mozilla Thunderbird 127.0:

Homepage
Changelog
Download | 32-Bit en-US
Download | 64-Bit en-US
Download | 32-Bit All Languages
Download | 64-Bit All Languages
Download | Portable
Addons