SBC was very popular with the people because of its highly reliable email service. But, the company’s services were confined to a certain region. Then occurred the merging of the company with a giant firm AT&T and everything transformed from that point onwards.
AT&T despite its much bigger identity didn’t change the name of SBCGlobal mail to AT&T mail because the company was in doubt whether the change of name would cause the popularity of this email service to decline. So, AT&T added their name in between and so, the name became SBCGlobal AT&T mail. But, if you have no experience of troubleshooting email account related issues, then the best approach would be to get in touch with experts and let them handle such tasks on your behalf. For assistance regarding the how do I log in to sbcglobal.net email, one can contact support.