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
| Version number | 78.1.1 |
| Release status | Final |
| Operating systems | Windows 7, Linux, macOS, Windows 8, Windows 10 |
| Website | Mozilla Foundation |
| Download | https://www.thunderbird.net/en-US/thunderbird/all/ |
| License type | GPL |