Download Mozilla Thunderbird 102.7.0

The Mozilla Foundation has released version 102.7.0 of Thunderbird. Thunderbird is an open source client for email and newsgroups, with features such as support for different mail and news accounts, a spam filter, spell checker and a customizable appearance. In version 102 Mozilla has, among other things, revamped the user interface and the address book, made importing and exporting user accounts easier and added the chat protocol Matrix. This release contains an issue with signing in to Microsoft 365 accounts for school or work, so if you use that, you may want to wait until version 102.7.1 is released to update. The following changes and improvements have been made in this update:

What’s New

• Enterprise policies now support Thunderbird-specific preferences

Fixes

• Localized builds and langpacks now use “comm-l10n” repository; downstream builds using official langpacks should not need to make changes
• Having too many folders open at startup caused loss of MSF files
• Copying an email from one local folder to another local folder sometimes caused “Another Operation is using the folder” error on Windows 7
• Email address pill allowed for incorrectly formatted email addresses
• Creating security exceptions for messages sent using a self-signed certificate failed if hostname contained uppercase letters
• S/MIME certificate verification was prohibitively slow
• OpenPGP key import failed for key blocks with comments that contain Unicode characters
• Chat conversation sidebar was too wide under certain circumstances, making scrollbar unusable
• On Mac, deleting events from Today Pane with “Backspace” key deleted selected messages instead
• Various security fixes

Known Issues

• OAuth2 authentication not working for Microsoft 365 Enterprise accounts. See the Blog post for additional information. Bug 1810760