Beta Notes

Thunderbird Desktop

Version 126.0beta | Released April 24, 2024

Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

These notes apply to Thunderbird version 126 beta 3 released May 6, 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

"Cards View" now shows a "new" icon when there is a new message in a thread

new

A nested OpenPGP messages' signature status is now viewable

new

iCloud contacts and calendar discovery now supported when using a dedicated app password

What’s Changed

changed

"Cards View" Grouped By Sort style improvements

changed

"Permissive" importing of problematic OpenPGP keys now disabled by default; Set mail.openpgp.allow_permissive_import to allow

What’s Fixed

fixed

"Find in this message" did not work in multi-message view

fixed

Print dialog opened in Compose window did not prevent window interaction

fixed

Some OpenPGP messages were incorrectly reported as being partially signed or encrypted

fixed

Deleting a mail folder failed silently when disk space was low

fixed

Compacting an empty POP mail folder did not shrink the on-disk file size

fixed

Undoing deletion of an email from standalone window was not possible

fixed

Non-compliant "References" headers were not handled gracefully when mailnews.headers.showReferences was set

fixed

"Open Browser With Message-ID" failed for Google Groups due to URL change

fixed

"List Archive" button failed to open archive URL for Google Groups

fixed

Some OpenPGP dialogs' buttons were inaccessible off screen

fixed

Account setup triggered a second OAuth when looking for calendars

fixed

NNTP "Cancel Messages" menu item had moved to a submenu

fixed

"news:// URIs no longer opened as links or from the commandline

fixed

Posting to news groups was not possible when the profile had message encryption configured

fixed

Google Calendar account detection failed for Google hosted domains when the DNS entry had Upper-cased characters

fixed

"Item changed on server" Calendar dialog did not have a scrollbar for lengthy content, causing action buttons to be off screen

fixed

macOS performance improvements

fixed

Pressing Esc did not close the Cookie Manager dialog

fixed

High Contrast theme improvements

fixed

Various Cards View improvements

Fixed on Beta 2

What’s Fixed

fixed

Backing up OpenPGP key to a file from Account Settings did not work

fixed

Compose window toolbar items were unreadable on macOS in dark mode

fixed

Calendar Event Attendees dialog had incorrectly sized rows

Fixed on Beta 3

What’s Fixed

fixed

Focus did not transfer to a mail message opened in a new tab

fixed

Thread state in Cards view was not updated after toggling Group By sort order.

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