Beta Notes

Thunderbird Desktop

Version 127.0beta | Released May 15, 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 127 beta 2 released May 20, 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

Enabled ECDH encryption and decryption for S/MIME messages

new

Added new preference (mail.addressDisplayFormat) to always display full name and email address of all recipients in message list

new

Improved layout of LDAP address book properties dialog

new

Added some CSS transitions to Cards View

new

Added system accent color support to some elements

What’s Changed

changed

Removed account provisioner

What’s Fixed

fixed

Thunderbird notifications on Windows did not respond for 10 seconds after being clicked

fixed

Modifying Thunderbird UI font size outside of Thunderbird caused App Menu > Font Size option to be disabled

fixed

Sort type in Quick Filtered and Grouped By unified folders was not preserved after search was modified or cleared

fixed

Focus behavior for opening messages in a new tab changed depending on state of "mail.tabs.loadInBackground" preference

fixed

S/MIME messages did not display MIME message if MIME header was missing

fixed

Certificate errors silently failed when fetching new messages

fixed

Unified Folders did not preserve sort setting when switching to unthreaded view

fixed

Thunderbird did not always display message deletion confirmation when using Shift+Delete keyboard shortcut

fixed

Deleting collapsed group in Grouped By Sort did not update the message list to reflect the change

fixed

Text cursor did not move to beginning of line after clicking left margin of "To:" field

fixed

Accepting/declining appointments did not always send confirmation

fixed

Thunderbird did not have a preference to enable archiving inbox as a folder

fixed

Tooltip did not display full newsgroup name when hovering over newsgroups

fixed

Newsgroup messages were sometimes incorrectly interleaved when using offline cache

fixed

CardDAV addressbooks could not be used as an import target

fixed

IRC SASL authentication was enabled by default for all IRC servers

fixed

Convert To > Event did not save events on some CalDAV servers

fixed

Calendar day headings did not switch between short and long form when resizing calendar view

fixed

Task categories menu did not display category colors

fixed

Clear button was missing from Unified toolbar customization search bar

fixed

Visual and UX Quick Filter improvements

Fixed in beta 2

What’s Fixed

fixed

Autocrypt header was missing from some encrypted messages due to case-sensitive email address matching

Learn What’s Next

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