mail keeps having trouble with imap server

KGBW wrote:

since last update to macOS Ventura, I keep getting imap outgoing mail problems with gmail

For problem accounts the go to way to sort things out is to delete the account, then add it back.

Remove email accounts in Mail on Mac

Remove email accounts in Mail on Mac - Apple Support

Add email accounts in Mail on Mac - Apple Support

Add email accounts in Mail on Mac - Apple Support

Note—

IMAP accounts stay on the server, so no local loss, when you re-sync

POP accounts download and remove from the server—therefor save your inbox/sent box if you want them

On My Mac" is just that, local folders you created and moved mail into. So no loss