Always ensure "Use SSL" or "SSL/TLS" is checked for both incoming and outgoing servers.
Select , enter a nickname (e.g., "Outlook-Desktop"), and click Create . ATT.NET CONFIG.txt
For security, AT&T requires a instead of your standard account password when using apps like Outlook or Apple Mail. How to generate one: Log into your account at Currently from AT&T. Go to your Profile and select Manage Secure Mail Key . Always ensure "Use SSL" or "SSL/TLS" is checked
Copy this key and paste it into the field of your email app. Configuration Checklist How to generate one: Log into your account
These settings work for all AT&T-affiliated domains, including: @sbcglobal.net , @bellsouth.net , @ameritech.net . @pacbell.net , @swbell.net , @prodigy.net , @flash.net . POP3 and IMAP Email Settings - AT&T Email Customer Support
AT&T strongly recommends using over POP3 because it synchronizes your email actions (like reading or deleting) across all your devices. IMAP (Recommended) POP3 (Traditional) Incoming Server imap.mail.att.net inbound.att.net Incoming Port 993 (SSL/TLS) 995 (SSL/TLS) Outgoing Server smtp.mail.att.net outbound.att.net Outgoing Port 465 or 587 (SSL/TLS) 465 (SSL/TLS) Username Your full email address Your full email address Password Secure Mail Key Secure Mail Key The "Secure Mail Key" Requirement
Ensure the box for "My outgoing server (SMTP) requires authentication" is checked.