To set up your AT&T Yahoo email account, use the following settings:

Incoming Mail Server (IMAP): imap.mail.att.net, Port: 993 (SSL enabled)
Outgoing Mail Server (SMTP): smtp.mail.att.net, Port: 465 (SSL enabled)
Make sure to enable SSL/TLS encryption for both incoming and outgoing servers. Use your full AT&T Yahoo email address as the username and enter your account password. These settings ensure secure and reliable email communication. If you encounter any issues, refer to AT&T's support documentation or contact their customer support for further assistance.