Thunderbird does not check for email when started
Thunderbird no longer downloads emails when started, I have to do a "get messages" before it will check for new messages. Using Thunderbird 68.9.0. After I do a "get messages" then Thunderbird will check and download every 10 minutes (my setting), but will not get messages when first started. I first reported this in December of 2019, and it still has not been fixed.
Opaite Mbohovái (1)
The bug reports don't indicate it's been fixed, but a couple of workarounds have been proposed:
https://support.mozilla.org/en-US/questions/1275606#answer-1299178