Hello there idexter. We have read your message. We try to help you.

Before we troubleshoot this issue, can I ask you a few questions to gain more insight into this situation?

The most important thing in this kind of situation is to see from both sides whether you know Smtp settings properly and correctly at the moment.

With regard to receiving and sending, but also with the receiving party of these actions that you perform.

https://support.mozilla.org/en-US/kb/cannot-receive-messages

Greetings Firefox volunteer.

Hello there idexter.

try to stop thunderbird application.

try to find the global-message-db.sqlite in your thunderbird profile. try to delete these global-message-db.sqlite files.

Now you try to force Thunderbird to download all pop3 related files. restart Thunderbird and this process will reindex itself automatically.

Greetings Firefox volunteer

Hello there idexter.

further options that are not resolved in your system may block further steps in downloading your mails as follows to solve them internally for a good management of these processes.

cleaning your account. do not increase the 4 gb limit of storage. The claimant is sending a large number of emails that the server does not accept.

to make another attempt to get imap files downloaded anyway . choose account settings) synchronization and storage for the imap situation.

allow keep messages for his account on this computer option. after doing this press the advanced button to download the imap folders .

after this you will be in the inbox function looking at the inbox function regarding the downloads.

Greetings Firefox volunteer,