Release Notes

Thunderbird Desktop

Version 128.4.3esr | Released November 12, 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.

For help and a quick start on Thunderbird 128, see Thunderbird 128 Nebula FAQ

For more on all the new features in Thunderbird 128, see What’s New in Thunderbird 128.

System Requirements: Details

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

What’s Fixed

fixed

Folder corruption could cause Thunderbird to freeze and become unusable

fixed

Message corruption could be propagated when reading mbox

fixed

Folder compaction was not abandoned on shutdown

fixed

Folder compaction did not clean up on failure

fixed

Collapsed NNTP thread incorrectly indicated there were unread messages

fixed

Navigating to next unread message did not wait for all messages to be loaded

fixed

Applying column view to folder and children could break if folder error occurred

fixed

Remote content notifications were broken with encrypted messages

fixed

Updating criteria of a saved search resulted in poor search performance

fixed

Drop-downs may not work in some places

Learn What’s Next

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