@Ford_PrefectExactly! 😄 I don't a have problem. But It would be nice(!) to have a checkbox, when I'm in settings after install anyway... 😉 and there are people which have to google it indeed.
AND an autostartoption for Firefox is not as useful as for my Mail-Client, but that's already there.
When W1* starts, >>>>>it's because I need my workplace to be ready to use, W1* updates happen, shi*s happens = Shut-down or Soft-boot is the only way-out ... If I or it>self reboot the desktop, >>>>>it's because I need my workplace to be ready to use.
And to be operative in the shortest time, I don't need Thunderbird to take half of my screen showing my mails.
For me: Mails are a secondary priority, toward managing the Customer Orders Process 🤷
( while the phone keeps ringing, with queued people waiting for immediate answers )