mail.l9s.io — your SMTP endpoint

Configure applications to submit via mail.l9s.io. It is the Layer 9 SMTP relay hostname for authenticated outbound mail.

Client configuration

Any SMTP-capable client can connect — WordPress plugins, Laravel, Nodemailer, PHPMailer, and more.

Can I use my own hostname?

You authenticate domains for From: identity; submission host remains mail.l9s.io.