and your error message is?

No error message at all; the e-mail just doesn't come through on Thunderbird at all. It comes through on my phone POP e-mail and on my tablet OWA account. My e-mail host is myhosting.com and they have no clue.

I have the same problem though doing "Get all Messages" will get all the messages from all the accounts I have set up. Trying to get just from one account does not work. Also, Send Later does not work. Updated to 102.3.0 this morning and neither of these problems has been fixed yet.

It turns out that my e-mail hosting service, myhosting.com, does not have the security levels set up that are required by Thunderbird 102 and higher so I switched my e-mail hosting to a different service.