I am an old Thunderbird user sticking with it for over 10 years, and I cannot see any new mail notifications on my old Ubuntu 16.04 (Unity) since my last Thunderbird update, which is quite troublesome for my daily work.
I tried searching addons but found no Thunderbird 68 compatible addons exist. I finally updated my Ubuntu to latest LTS 20.04 to see if it is resolved in latest release, but the result is still negative. So, does anyone know a solution to this problem: how can I receive new mail notifications from Thunderbird 68 on Ubuntu 20.04?
