Release Notes

Thunderbird Desktop

Version 78.9.1 | Released April 8, 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.

For more on all of the new features in Thunderbird 78, see New in Thunderbird 78.0.

System Requirements: Details

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

What’s New


Support recipient aliases for OpenPGP encryption. Documentation can be found here.

What’s Fixed


The key and signature parts of the message security popup on a received message could not be selected for copy/paste.


Various UX and theme improvements


Various security fixes

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