Email account problem with Mail app after update
My primary email address stopped sending mail using the Mail app on both my iPads and my iPhone after the iOS 17.1 update. I could still receive emails from that account, but not send. This is not an exchange account, just a regular email account from my ISP, using IMAP protocol. No iCloud.
I tried deleting the account on one of the iPads and then rentering it as a new account, using settings provided by my ISP. I was able to send email again on the iPad, but the email account only syncs up with the Inbox. All other folders, including archived messages, are missing on the iPad. Updating to iOS 17.1.1 has made no difference.
Everything works fine on my desktop (running the latest Sonoma) and my laptop (running an older OS), but I use Thunderbird for that particular account on those two Macs.
After the fiasco with the iPad, I decided to leave the other two mobile devices alone for now.
So how do I get the mobile Mail app to sync up with my IMAP account and show the rest of my account's folders?
iPad Air, iOS 12