What happened to my net SBCGlobal net email not working on account? SBCGlobal net Email not working is an old email service that was originally offered by Southwestern Bell Corporation or SBC for short. Today, SBC still operates as a subsidiary of AT&T, but the SBCGlobal e-mail service has been renamed AT&T, and e-mail accounts have migrated to AT&T Yahoo!. Although, you need to visit our website for more information related to email. https://www.experts-support.com/blog/sbcglobal-email-not-working