Release Notes

Thunderbird Desktop

Version 91.3.2 | Released November 19, 2021

Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla.

For more on all the new features in Thunderbird 91, see New in Thunderbird 91.0.

System Requirements: Details

  • Windows: Windows 7 or later
  • Mac: macOS 10.12 or later
  • Linux: GTK+ 3.14 or higher

What’s Changed

changed

Date selection in Calendar print settings widget changed to use mini calendar widget

changed

OpenPGP: Botan updated to 2.18.2; addresses CVE-2021-40529

What’s Fixed

fixed

"Repair Text Encoding" menu item did not work

fixed

Troubleshoot Mode menu item did not always indicate whether troubleshooting mode was enabled

fixed

Message content could be unintentionally hidden due to CSS class names conflicting

fixed

SMTP server port was reset to "0" after clicking the "Re-Test" button in the Account Setup wizard

fixed

No "Paste" option was available in the config editor (about:config) context menu

fixed

Saving a PDF attachment opened in a separate tab saved the email message instead

fixed

Opening a PDF attachment from a message in a standalone or compose window did not move the focus to opened attachment

fixed

After restart, Thunderbird was not able to restore opened message tabs when the message was in a folder with non-ASCII characters in its name

fixed

The "pill" indicator was incorrectly shown when sending a message to newsgroup

fixed

When printing from Calendar, after leaving the "Calendar" settings, there was no way to go back

fixed

Month pickers in the Calendar print UI lacked scrollbars when the content overflowed

fixed

Account Manager and Addons Manager were unreadable when using the Dark theme

Learn What’s Next

Thunderbird keeps getting better. Subscribe to our newsletter and follow us on social media to stay informed.