Download Mozilla Thunderbird 78.1.0

The Mozilla Foundation has released version 78.1 of Thunderbird. Thunderbird is an open source client for e-mail and newsgroups, with features such as support for various mail and news accounts, a spam filter, spell checker and a customizable appearance. In version 78 we find, among other things, a dark mode and other parts of the interface, such as the icons and the screen for composing an email, have been taken care of. Furthermore, the Lightning calendar add-on is now a standard part of the program, there is a new wizard for the first use and only MailExtensions add-ons are supported. However, an automatic update from 68.x to 78.x should not work until version 78.2. The following improvements have been made in this release:

What’s New:

• OpenPGP support is now feature complete. Improvements: new Key Wizard, online searching for OpenPGP keys, and more. OpenPGP is still disabled by default, to allow more time for testing, correctness, and localization.
• The preferences tab now has a search field.

Changes:

• Dark background in message reader is now disabled.

Fixes:

• Thunderbird startup was slow when using folder color customizations with many folders. Previously configured colors will not be migrated.
• Mail quota usage in status bar did not support terabyte folder sizes
• Changing Junk mail settings with keyboard toggled wrong setting
• Advanced IMAP server preferences not saved in Account Manager
• Address book migration updates and fixes
• Address book: Last Modified Date was not updated
• Dark mode improvements
• Various security fixes

Known Issues:

• Mail header toolbar (Reply, Forward, Archive, Junk buttons) no longer configurable
• Fixed width font not working in compose window