How do I configure Outlook for AOL Mail?

Once you've selected your incoming server, you'll need to select a SMTP (outgoing mail) configuration. Incoming server settings should be set to the correct SMTP port for AOL. You can also select the default SMTP protocol if you prefer it. Then, you're ready to download your AOL email to your Outlook account. You should also make sure to set your SMTP and IMAP settings for your email account.

Check also - https://emailspedia.com/aol-mail-setup-on-iphone/