I have found a solution. I removed ~/snap/thunderbird/common/.thunderbird/8sbugc0d.default/handlers.json and restarted Thunderbird. The links are now working.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2067092 Title: Links within mail do not open the browser To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/2067092/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
