Rated 5 out of 5 stars

Installation was bit tricky on Xubuntu 18.04.1, needed to install xul-ext-lightning from apt, then add this add-on trough Thunderbird Add-ons manager.

But it works with my Gsuite account and with 2FA enabled without any app passwords. Even USB U2F key worked during logon. So nice!

This review is for a previous version of the add-on (4.4.2).