New Update Mozilla Thunderbird (updates and discussion)

Thunderbird Nebula Version 128.6.1 (ESR)

What’s Fixed​

  • Link at about:rights pointed to Firefox privacy policy instead of Thunderbird's
  • POP3 'fetch headers only' and 'get selected messages' could delete messages
  • 'Search Online' checkbox in saved search properties was incorrectly disabled
  • POP3 status message showed incorrect download count when messages were deleted
  • Thunderbird could show incorrect 'From' and 'To' fields for mailing list emails
  • Space bar did not always advance to the next unread message
  • Folder creation or renaming failed due to incorrect preference settings
  • Forwarding/editing S/MIME drafts/templates unusable due to regression
  • Sort order in 'Search Messages' panel reset after search or on first launch
  • Reply window added an unnecessary third blank line at the top
  • Thunderbird spell check box did not allow ENTER to accept suggested changes
  • Long email subject lines could overlap window control buttons on macOS
  • Flathub manifest link was not correct
  • 'Prefer client-side email scheduling' needed to be selected twice
  • Duplicate invitations were sent if CALDAV calendar email case did not match
  • Visual and UX improvements
 
Thunderbird Nebula Version 128.7.0 (ESR)
  • Images inside links could zoom when clicked instead of opening the link
  • Compacting an empty folder failed with write error
  • Compacting of IMAP folder with corrupted local storage failed with write error
  • After restart, all restored tabs with opened PDFs showed the same attachment
  • Exceptions during CalDAV item processing would halt subsequent item handling
  • Context menu was unable to move email address to a different field
  • Security fixes
 
Thunderbird Nebula Version 128.7.1 (ESR)

What’s Fixed​

  • Users may not have been notified if messages arrived in multiple folders at once.
  • Message list scrolled to the wrong place on start-up.
  • Unified folders could become unusable instead of being automatically rebuilt.
  • Some messages may have been threaded incorrectly in unified folders.
  • Middle-click autoscroll cursor appeared without arrows instead of expected design.
 
Thunderbird Nebula Version 128.8.0 (ESR)

What’s Fixed​

  • Opening an .EML file in profiles with many folders could take a long time.
  • Users with many folders experienced poor performance when resizing message panes.
  • "Replace" button in compose window was overwritten when the window was narrow.
  • Export to mobile did not work when "Use default server" was selected.
  • "Save Link As" was not working in feed web content.
  • Security fixes
 
Thunderbird Nebula 136.0 (stable version) is now "recommended" to download from the homepage:

What’s New​

  • Messages are automatically adapted to dark mode with a quick toggle in the header.
  • New "Appearance" Settings UI to globally control message threading/sorting order.

What’s Changed​

  • Criteria for closing idle message databases.

What’s Fixed​

  • Thunderbird Release channel was not displayed in "About Thunderbird".
  • Crash could occur when shutting down during MAPI send.
  • The error message for compacting a corrupted local folder was not useful.
  • Deleting or detaching attachments in a saved .eml file appeared to work but failed.
  • On HiDPI screens, clicking addresses in the header could show popup off-screen.
  • Opening an .EML file in profiles with many folders could take a long time.
  • Some messages may have been threaded incorrectly in unified folders.
  • Unified folders could become unusable instead of being automatically rebuilt.
  • Folders at level 3+ were not auto-discovered when IMAP subscriptions were ignored.
  • New subfolder did not inherit parent view, sort order, sort type, or columns.
  • With "Fetch headers only" enabled, messages could not be sorted by size.
  • Selecting starred messages did not update immediately.
  • Marking a unified folder as favorite did not show it in favorite folders.
  • Users with many folders experienced poor performance when resizing message panes.
  • The UI could falsely report a message as encrypted when a null cipher was used.
  • Search messages dialog list could not be sorted by clicking the header icon.
  • Sending to multiple SMTPs could fail silently due to missing address book.
  • "Replace" button in compose window was overwritten when the window was narrow.
  • Changing the UI font size did not apply to some dialogs.
  • Deleted Gmail messages stayed visible until compact/expunge, despite settings.
  • Export to mobile did not work when "Use default server" was selected.
  • Account settings menu could be loaded twice.
  • Account Settings updated font size were not reflected in the content frame.
  • Add-ons: Context menu entries were incorrectly aligned.
  • Middle-click autoscroll cursor appeared without arrows instead of expected design.
  • Some functionality was missing for newsgroup messages opened from a file or URI.
  • Notifications for new mail were not showing for IMAP.
  • Message and folder lists could display incorrect line spacing after restart.
  • Clicking a 'mid:' link could clear the thread pane and cause errors.
  • Release channel incorrectly showed What's New page after update.
  • "Save Link As" was not working in feed web content.
  • Sort indicators were missing on the calendar events list.
  • Visual and UX improvements
  • Security fixes
 

Thunderbird Version 136.0.1​

What’s Fixed​

  • Thunderbird could crash during shutdown if a search was still active
  • Failed news message send could close the compose window unexpectedly



Thunderbird Version 128.8.1 (ESR)​

What’s Fixed​

  • PGP/MIME signed message with a missing signature did not display
  • Some emails forwarded as attachments used the wrong MIME type
 
Thunderbird 137.0

What’s Changed​

  • File names are now used when storing mail folders (Windows only).
  • Disable Linux system tray icon until it gains functionality

What’s Fixed​

  • Security fixes
  • In-app notifications did not display correctly in high contrast mode.
  • Repair folder did not fix mbox files produced on MacOS before Thunderbird 1.0.
  • Edit menu entries missing when group header selected in "Grouped by sort" view.
  • IMAP folder "Undelete" performed "Delete" when mixed messages were selected.
  • In RSS feeds, the space bar did not scroll the message like it did in emails.
  • Slow performance opening an .eml file in a profile with many folders.
  • Threaded search view was not updated correctly when sorted by date received.
  • Line spacing changed unexpectedly in the message list with the default font size.
  • Saved message list selection was discarded when user made a new selection.
  • Replying from local or unified folders failed when the message pane was hidden.
  • Message security panel strings were used in the wrong places.
  • Importing an OpenPGP public key with whitespace failed.
  • Unable to open attached signed OpenPGP .eml message.
  • Right-clicking "Decrypt and Save As..." on an attachment file failed.
  • Searching during shutdown could cause crash.
  • Failed news message sending could close the compose window unexpectedly.
  • Having a corrupt address book database prevented sending mail.
  • Forwarding messages as attachments could use the wrong MIME type.
  • Two-factor auth via text or email did not work with Office 365 using Oauth2.
  • Account settings menu could be loaded twice.
  • No gap existed between Back and Forward buttons in the Feed Account Wizard dialog.
  • Thunderbird could crash when importing mail
  • Unable to auto-discover Address Book on Radicale server.
  • Mark-Of-The-Web was not applied to attachments saved via drag and drop.
  • Some messages could not be scrolled due to hidden overflows in inline styles.
  • Clicking a 'mid:' link could clear the thread pane and cause errors.
  • Performance regressed when moving/copying messages on Windows.
  • Automatic compact did not attempt to compact all folders when error encountered.
  • Slow performance when moving bulk messages from IMAP to local.
  • Crossposting news article was not possible if newsgroups on different servers.
  • IRC channel was not visible after restart.
  • Unable to view full certificate chain from the "View Signature" button.
  • Visual and UX improvements



Thunderbird 128.9.0 (ESR)

What’s New​

  • Thunderbird now has a notification system for real-time desktop alerts

What’s Fixed​

  • Data corruption occurred when compacting IMAP Drafts folder after saving a message
  • Right-clicking "Decrypt and Save As..." on an attachment file failed.
  • Thunderbird could crash when importing mail
  • Sort indicators were missing on the calendar events list.
  • Security fixes
 
Thunderbird Version 137.0.1

What’s Fixed​

  • Added delay to built-in notifications when new profile is created in offline mode



Thunderbird Version 128.9.1 (ESR)

What’s Fixed​

  • Added delay to built-in notifications when new profile is created in offline mode
 
Thunderbird version 137.0.2

What’s Fixed​

  • Thunderbird could crash on startup when creating Linux system tray icon
  • Security fixes



Thunderbird version 128.9.2 (ESR)

What’s Fixed​

  • wo-factor auth via text or email did not work with Office 365 using Oauth2.
  • IRC channel was not visible after restart.
  • Global indexing failed when processing email with invalid calendar data
  • Security fixes
 
Thunderbird version 138.0.1

What’s Fixed​

  • Thunderbird could crash when importing Outlook messages
  • Messages were permanently deleted if Trash folder had non-ASCII Unicode characters
  • Visual and UX improvements
  • Security fixes
 
Thunderbird version 138.0.2

What’s Fixed​

  • Messages could not be viewed if the profile used a UNC path
  • Standalone message windows/tabs no longer responded after folder compaction
  • Compacting folders with certain pending operations caused unnecessary warnings
  • Security fixes
 
Thunderbird version 139.0.1 (stable release)

What’s Fixed​

  • Thunderbird could crash when copying a local folder to IMAP
  • Upgrade to 139.0 incorrectly switched Table View to Cards View
 
Thunderbird Version 140.0.1 (stable release)
Fixed: Inserting a link into an HTML mail did not work as expected

Unresolved: Passwords are not remembered in 32-bit MAPI use without a compose window