Thunderbird Desktop
Version 78.6.0 | Released December 15, 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 New
new
MailExtensions: Added browser.windows.openDefaultBrowser()
What’s Changed
changed
Thunderbird now only shows quota exceeded indications on the main window
changed
MailExtensions: menus API enabled in messages being composed
changed
MailExtensions: Honor allowScriptsToClose argument in windows.create API function
changed
MailExtensions: APIs that returned an accountId will reflect the account the message belongs to, not what is stored in message headers
What’s Fixed
fixed
Keyboard shortcut for toggling message "read" status not shown in menus
fixed
OpenPGP: After importing a secret key, Key Manager displayed properties of the wrong key
fixed
OpenPGP: Inline PGP parsing improvements
fixed
OpenPGP: Discovering keys online via Key Manager sometimes failed on Linux
fixed
OpenPGP: Encrypted attachment "Decrypt and Open/Save As" did not work
fixed
OpenPGP: Importing keys failed on macOS
fixed
OpenPGP: Verification of clear signed UTF-8 text failed
fixed
Address book: Some columns incorrectly displayed no data
fixed
Address book: The address book view did not update after changing the name format in the menu
fixed
Calendar: Could not import an ICS file into a CalDAV calendar
fixed
Calendar: Two "Home" calendars were visible on a new profile
fixed
Calendar: Dark theme was incomplete on Linux
fixed
Dark theme did not apply to new mail notification popups
fixed
Folder icon, message list, and contact side bar visual improvements
fixed
MailExtensions: HTTP refresh in browser content tabs did not work
fixed
MailExtensions: messageDisplayScripts failed to run in main window
fixed
Various security fixes
Known Issues
unresolved
Thunderbird performs sluggishly on macOS Big Sur
Learn What’s Next
Thunderbird keeps getting better. Subscribe to our newsletter and follow us on social media to stay informed.
