I am looking for a way to stop my Thunderbird application auto start.
However I don't want to just remove the application, because may I need it in the future, and some important letters are only stored in there.
I tried to check the 'Startup Applications', but I didn't see the Thunderbird client.
How can I stop Thunderbird from starting automatically each time?
Based on the commenteries, I also tried to check the ~/.config/upstart/ folder, and the .profile file. Unfortunately I didn't find the solution.
Every answer will be appreciated!