Download Mozilla Thunderbird 78.1.1

The Mozilla Foundation has released version 78.1.1 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:

Changes:

• Building OpenPGP shared library linked to system libraries now supported
• MailExtension errors now shown in Developer Tools console by default
• MailExtensions: Dynamic registration of calendar providers now supported

Fixes:

• OpenPGP improvements
• Message preview was sometimes blank after upgrading from Thunderbird 68
• Email addresses whitelisted for remote content not displayed in preferences
• Importing data from Seamonkey did not work
• Renaming a mail list did not update the side bar
• MailExtensions: messenger.* namespace was undefined

Known Issues:

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