Use the iPhone's Mail, Contacts, Calendar section of the Settings app to set up new e-mail accounts and add existing ones to your device, including your BellSouth e-mail account. Once added, you can use the default email app that is provided on your iPhone or any third-party email app that is available on the Apple App Store to send and receive email from your BellSouth account. Set up your BellSouth email. Launch the Settings app on your iPhone and select Mail, Contacts, Calendar. Touch Add Accounts under the Accounts heading. Select Other than Account Type. Tap to add an email account. Enter your name, BellSouth's complete e-mail address and password in the space provided. Enter the details of the BellSouth Mail server in the spaces provided. AT&T owns BellSouth, which is why it uses AT&T's mail servers. In the Incoming Mail Server section, you will have to enter a few details such as ‘inbound.att.net’ in the Hostname and CustomerID@bellsouth.net...