Beta Notes

Thunderbird Desktop

Version 134.0beta | Released November 26, 2024

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 134 beta 3 released December, 4, 2024.

System Requirements: Details

  • Windows: Windows 10 or later
  • Mac: macOS 10.15 or later
  • Linux: GTK+ 3.14 or higher

What’s New

new

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

new

Add end of year donation appeal

What’s Fixed

fixed

New mail notification could show for the wrong folder, causing repeated alerts

fixed

Subscribe window "Show items that contain" should not have been shown for IMAP

fixed

Downloading message headers from a newsgroup could cause a hang

fixed

POP3 inbox could show new mail with no subject, no sender, and date 1970-01-01

fixed

"mailto:" links did not apply the compose format of the current identity

fixed

Dragging embedded images from a message to a compose window was not possible

fixed

Authentication failure of AUTH PLAIN or AUTH LOGIN did not fall back to USERPASS

fixed

APOP authenication for POP3 did not prompt for corrected password

fixed

XMPP chat did not display messages sent inside a CDATA element

fixed

Release channel incorrectly opened whatsnew page

fixed

Today pane agenda sometimes scrolled for no apparent reason

fixed

Selecting a display option in View -> Tasks did not apply in the Task interface

fixed

CalDAV calendars without offline support could degrade start-up performance

fixed

Visual and UX improvements

Fixed in beta 2

What’s Fixed

fixed

In-app notification messages did not display correctly in dark mode

Fixed in beta 3

What’s Fixed

fixed

In-app notification close button alignment not consistent across platforms

fixed

Message list performance slow when many updates happened at once

fixed

Large virtual folders could be very slow

Learn What’s Next

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