You’re viewing instructions for
Software
Mac OS X Mail (all)
KM1010489-slctrgrp_macmailallA security upgrade is coming to AT&T email. If you use Apple Mail or Mac Mail with macOS 10.10/Yosemite or older, you’ll have to update your email settings. Learn more about the security upgrade.
If your OS is affected, be sure to create a secure mail key to set up or update your email. If your Mac runs on OS 10.11/El Capitan or above, you won’t need one.