Release Notes

Thunderbird Desktop

Version 78.11.0 | Released June 1, 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 Fixed

fixed

OpenPGP could not be disabled for an account if a key was previously configured

fixed

Recipients were unable to decrypt some messages when the sender had changed the message encryption from OpenPGP to S/MIME

fixed

Contacts moved between CardDAV address books were not synced to the new server

fixed

CardDAV compatibility fixes for Google Contacts

fixed

Folder pane had no clear indication of focus on macOS

fixed

Windows theme improvements

fixed

Various security fixes

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