Release Notes

Thunderbird Desktop

Version 78.3.3 | Released October 16, 2020

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 Fixed


OpenPGP: Improved support for encrypting with subkeys


OpenPGP message status icons were not visible in message header pane


OpenPGP Key Manager was missing from Tools menu on macOS


Creating a new calendar event did not require an event title

Known Issues


Message list is not focused at startup

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