Release Notes

Thunderbird Desktop

Version 115.3.1 | Released September 29, 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 Fixed

fixed

In Unified Folders view, some folders had incorrect unified folder parent

fixed

"Edit message as new" did not restore encrypted subject from selected message

fixed

Importing some CalDAV calendars with yearly recurrence events caused Thunderbird to freeze

Learn What’s Next

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