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Thunderbird is an open source project, which means anyone can contribute ideas, designs, code, and time helping fellow users.
Join UsVersion 68.3.1, first offered to channel users on December 16, 2019
In dark theme unread messages no longer shown in blue to distinguish from tagged messages
Account setup is now using client side DNS MX lookup instead of relying on a server.
Searching LDAP address book crashed in some circumstances
Message navigation with backward and forward buttons did not work in some circumstances
WebExtension toolbar icons were displayed too small
Calendar: Tasks due today were not listed in bold
Calendar: Last day of long-running events was not shown
When upgrading from Thunderbird version 60 to version 68, add-ons are not automatically updated during the upgrade process. They will however be updated during the add-on update check. It is of course possible to reinstall compatible add-ons via the Add-ons Manager or via addons.thunderbird.net.