Test & verify your SMTP server

A lightweight online tool to validate mail server connectivity, authentication, and delivery — right from the browser.

~/smtp-check

ready

SMTP Host hostname or IP address

Port 587 TLS · 465 SSL · 25 plain

Secured Connection SSL/TLS · auto-detected by port

Authentication Login with username & password

Password SMTP account password

Email From

Email To test mail goes here

$ fill in the details and click send to start