Thunderbird Desktop
Version 137.0beta | Released March 12, 2025
Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla.
These notes apply to Thunderbird version 137 beta 3 released March, 24, 2025.
System Requirements: Details
- Windows: Windows 10 or later
- Mac: macOS 10.15 or later
- Linux: GTK+ 3.14 or higher
What’s Changed
changed
File names are now used when storing mail folders (Windows only).
What’s Fixed
fixed
In-app notifications did not display correctly in high contrast mode.
fixed
Repair folder did not fix mbox files produced on MacOS before Thunderbird 1.0.
fixed
Edit menu entries missing when group header selected in "Grouped by sort" view.
fixed
IMAP folder "Undelete" performed "Delete" when mixed messages were selected.
fixed
In RSS feeds, the space bar did not scroll the message like it did in emails.
fixed
Slow performance opening an .eml file in a profile with many folders.
fixed
Threaded search view was not updated correctly when sorted by date received.
fixed
Line spacing changed unexpectedly in the message list with the default font size.
fixed
Saved message list selection was discarded when user made a new selection.
fixed
Message security panel strings were used in the wrong places.
fixed
Importing an OpenPGP public key with whitespace failed.
fixed
Unable to open attached signed OpenPGP .eml message.
fixed
Searching during shutdown could cause crash.
fixed
Failed news message sending could close the compose window unexpectedly.
fixed
Having a corrupt address book database prevented sending mail.
fixed
Forwarding messages as attachments could use the wrong MIME type.
fixed
Two-factor auth via text or email did not work with Office 365 using Oauth2.
fixed
Account settings menu could be loaded twice.
fixed
Unable to auto-discover Address Book on Radicale server.
fixed
Mark-Of-The-Web was not applied to attachments saved via drag and drop.
fixed
Some messages could not be scrolled due to hidden overflows in inline styles.
fixed
Clicking a 'mid:' link could clear the thread pane and cause errors.
fixed
Automatic compact did not attempt to compact all folders when error encountered.
fixed
Slow performance when moving bulk messages from IMAP to local.
fixed
Crossposting news article was not possible if newsgroups on different servers.
fixed
IRC channel was not visible after restart.
fixed
Unable to view full certificate chain from the "View Signature" button.
Fixed in beta 2
What’s Fixed
fixed
Replying from local or unified folders failed when the message pane was hidden.
fixed
Right-clicking "Decrypt and Save As..." on an attachment file failed.
fixed
No gap existed between Back and Forward buttons in the Feed Account Wizard dialog.
Fixed in beta 3
What’s Changed
changed
Disable Linux system tray icon until it gains functionality
What’s Fixed
fixed
Performance regressed when moving/copying messages on Windows.
