Q: Verification problem with AOL account

Hi j.b.frommd,

I understand you keep getting a message that your AOL email account can't be verified so you can't use that account.  Resetting the password didn't help.

First please see this article,

If you can’t send or receive email on your Mac - Apple Support

You may want to contact AOL before deleting and recreating your email account.

https://help.aol.com/contact

If your account is setup as IMAP then your email is stored on their servers. If setup as POP3 then the email is local to your computer.  Either way, you should backup before deleting any email account.

Mail (El Capitan): Create or delete mailboxes

WARNING:    Deleting a mailbox permanently deletes the mailbox and its contents, and can’t be undone. If you use Time Machine to back up files on your Mac, you can use it to recover previous versions of a deleted mailbox.

Take care.