Now, let’s check out the steps through which you can easily verify or update ATT.net email settings.
Choose file > account settings.
Tap on the AT&T email account and then tap on change.
Enter the proper IMAP and POP settings.
After that, enter the full user’s name.
From the password field, enter the secure mail key and choose to remember password checkbox.
Tap on next, and outlook will test the account settings.
Tap on close and then finish.