Release Notes

Thunderbird Desktop

Version 78.7.1 | Released February 5, 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


CardDAV address books now support OAuth2 and Google Contacts.

What’s Changed


Thunderbird will no longer allow installation of addons that use the legacy API

What’s Fixed


Send message button sometimes remained enabled when it should be disabled


Pressing command+enter to send a message on macOS did not work


OpenPGP: Failed to save attachments that contained binary data after decryption


Global search UI fixes


Various theme and color fixes to improve ease of use

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