The issue there is that the stable snap is missing a change which is in the beta channel to allow read access to ~/.thunderbird (snap blocks access to hidden directories by default).
I've pushed a fix to the vcs now https://git.launchpad.net/~desktop-snappers/thunderbird/+git/snap/commit/?id=0fcac123 a new snap build should start in a few moments ** Changed in: thunderbird (Ubuntu) Status: Confirmed => In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2056434 Title: Thunderbird profile not migrated to snap To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/2056434/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs