Download Mozilla Thunderbird 78.4.3

Mozilla has released a new version of Thunderbird for the third time in a short time. Thunderbird is an open source client for email and newsgroups, with features such as support for several 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. The changelog for this release looks like this:

Fixes:

• User interface was inconsistent when switching from the default theme to the dark theme and back to the default theme
• Email subject would disappear when hovering over it with the mouse when using Windows 7 Classic theme

Known Issues:

• Message list is not focused at startup