Release Notes

Thunderbird Desktop

Version 115.2.3 | Released September 20, 2023

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.

For help and a quick start on Thunderbird 115, see Thunderbird 115 Supernova FAQ

For more on all the new features in Thunderbird 115, see What’s New in Thunderbird 115.

System Requirements: Details

  • Windows: Windows 7 or later
  • Mac: macOS 10.12 or later
  • Linux: GTK+ 3.14 or higher

What’s Changed

changed

Card view and vertical layout are now default for new profiles

What’s Fixed

fixed

Go > Folder menu was disabled

fixed

"Tools" menu was blank when opened from compose window on macOS

fixed

Deleting an attachment from a message on an IMAP server corrupted the local copy when configured with "mark as deleted"

fixed

Manually entered passwords were not remembered for OAuth-authenticated accounts such as Yahoo mail

fixed

Quick Filter's "Keep filters applied" did not persist after restarting Thunderbird

fixed

Top-level Quick Filter settings did not persist after restart

fixed

Notifications for new messages with non-ASCII characters in the subject were garbled

fixed

"Mark Thread As Read" did not work when some messages in thread were already read

fixed

New Groups tab in NNTP subscribe dialog id not work as expected

fixed

Negative values were allowed in "Share for files larger than" field

fixed

Thunderbird sometimes crashed when deleting a parent folder with subfolders

fixed

"Send Message Error" appeared intermittently while Thunderbird was idle

fixed

Focused but not selected messages were missing visual indication of focus in card view

fixed

Notification dot did not disappear from taskbar icon on Windows after messages had already been read

fixed

Multiple selected messages could not be opened simultaneously if selection included more than 19 messages

fixed

Email replies received via BCC incorrectly populated From field with default identity

fixed

User was not always notified of message send failures in outbox

fixed

Tag dialog did not close properly after editing tag

fixed

Newsgroup field in compose window did not autocomplete with suggested newsgroup names

fixed

Canceling newsgroup messages did not check if sender matched user's own identity

fixed

Event dialog with several invitees expanded beyond screen height

fixed

Message check boxes were partially obstructed in message list

Known Issues

unresolved

Some folders missing from Unified Folders

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