Prior to the year 2017, the merged email address i.e the SBCGlobal and AT&T email which was smoothly served with the Yahoo mail. This simply means the user can opt for both of the accounts to perform the SBCGlobal login as they are the same using the same login credentials. With this, the mails which will arrive in the inbox can be easily revealed by any of the accounts after accessing the login SBCGlobal login net. But due to some of the reasons the accounts get unmerged and the users have both of the accounts the Yahoo! Mail and Att account.