Use the steps to efficiently perform ATT email server settings for the first time or on your
new computer.
From the Windows mail, press the Windows key + C to access the Charms menu.
Choose settings > accounts.
Select add an account.
Choose yahoo.
Now, complete the account information, which includes the ATT email address and the password.
Choose connection. If you provide the sign-in info, your ATT email will sync properly with the Windows mail.
Follow the steps properly to perform the ATT email server settings.