Release Notes

Thunderbird Desktop

Version 78.14.0 | Released September 7, 2021

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.

Thunderbird 78.14.0, is the final 78.x release.

System Requirements: Details

  • Windows: Windows 7 or later
  • Mac: macOS 10.9 or later
  • Linux: GTK+ 3.14 or higher

What’s Fixed


Various security fixes

Known Issues


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