This bug should not be classified as invalid, in every Ubuntu 17.04 installation that I do on several computers, thunderbird is not in Gnome-Software, and yet the workaround shown above did not work.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1682455 Title: thunderbird not available in GNOME Software To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1682455/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs