ATT.net email settings:- AT&T has just overtaken Yahoo email management, and so users of Yahoo emails, like @att.net and ancient baby bell domains, like @bell.net, and @sbcglobal.Net, have now been transferred to AT&T domain. All of these domains now belong to AT&T. In 2013 there was cooperation and relocation. Therefore, if users want to reach Yahoo or SBCGlobal, they now need to set up the AT&T mail service on their respective devices. The settings of AT&T's webmail on the iPhone will be addressed here. The setup refers to the email, password and server address you entered.