Update Outlook 2016 email settings using AT&T secure mail key
I see I need to update my Outlook 2016 settings to access my sbcglobal.net account by April 1. I have the 16-letter secure mail key. My Outlook account uses POP3 (what ever that means). I think I can just substitute my password with the secure mail key. Would that work?
I would like not to redo the settings and transfer pst info to use the IMAP settings unless I have to. What would be the advantage of going the IMAP route? I am just accessing my email on my PC and iPad.