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 .
Ensure the box for "My outgoing server (SMTP) requires authentication" is checked. ATT.NET CONFIG.txt
Always ensure "Use SSL" or "SSL/TLS" is checked for both incoming and outgoing servers. For security, AT&T requires a instead of your
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)
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
Select , enter a nickname (e.g., "Outlook-Desktop"), and click Create .
Copy this key and paste it into the field of your email app. Configuration Checklist
