Release Notes

Thunderbird Desktop

Version 78.5.1 | Released December 2, 2020

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 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

new

OpenPGP: Added option to disable email subject encryption

What’s Changed

changed

OpenPGP public key import now supports multi-file selection and bulk accepting imported keys

changed

MailExtensions: getComposeDetails will wait for "compose-editor-ready" event

What’s Fixed

fixed

New mail icon was not removed from the system tray at shutdown

fixed

"Place replies in the folder of the message being replied to" did not work when using "Reply to List"

fixed

Thunderbird did not honor the "Run search on server" option when searching messages

fixed

Highlight color for folders with unread messages wasn't visible in dark theme

fixed

OpenPGP: Key were missing from Key Manager

fixed

OpenPGP: Option to import keys from clipboard always disabled

fixed

The "Link" button on the large attachments info bar failed to open up Filelink section in Options if the user had not yet configured Filelink

fixed

Address book: Printing members of a mailing list resulted in incorrect output

fixed

Unable to connect to LDAP servers configured with a self-signed SSL certificate

fixed

Autoconfig via LDAP did not work as expected

fixed

Calendar: Pressing Ctrl-Enter in the new event dialog would create duplicate events

fixed

Various security fixes

Learn What’s Next

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