Release Notes

Thunderbird Desktop

Version 78.3.2 | Released October 7, 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 Changed


Thunderbird will no longer automatically install updates when Preferences tab is opened

What’s Fixed


OpenPGP: Improved support for encrypting with subkeys


OpenPGP: Encrypted messages with international characters were sometimes displayed incorrectly


Single-click deletion of recipient pills with middle mouse button restored


Searching an address book list did not display results


Windows installer was unreadable with Windows in high contrast mode


Dark mode, high contrast, and Windows theming fixes

Known Issues


Message list is not focused at startup

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