SBCGlobal email is a web-based email service used by millions all over the world. The SBCglobal.net mail service is part of att.net mail. After the partnership between ATT Internet services and Yahoo all SBCGlobal users can access their email accounts through Yahoo. If you need help logging in to your account, or if you come across an email error when you sign in, you can call the SBCGlobal customer service number and ask for assistance. Experts are available 24 hours a day to help you solve any error related to your SBCGlobal account.