I am using Thunderbird on my Manjaro (KDE Plasma) system. Since I have quite a large e-mail archive, I recently decided to move my Thunderbird profile data to another hard drive (from the SSD to a HDD). This hard drive is not automatically mounted when the computer starts.
Thunderbird, however, automatically starts after logging in, only to complain that it cannot find my profile.
So I wanted to turn it off. But where can this setting be found? I was unable to find Thunderbird under ‘Autostart’.
You could check in Session & Startup - you may have it auto starting there - also if you close thunderbird before turning off your computer - it shouldn’t start again - if it does you have probably saved it in a session