The correct SBCGlobal email settings for incoming and outgoing servers will help you use your email without interruptions. The incoming server or IMAP email settings for SBCGlobal has the server name imap.mail.att.net. The port number is 993, and the security is SSL or TLS. The outgoing server or SMTP has the name smtp.mail.att.net. The port number is 465, and the security type is SSL or TLS. After entering these details, you must input the correct username and password for IMAP and SMTP servers.