SMTP Tester
Verify SMTP credentials and send a real test email from any mail server
SMTP server
Pick a provider to autofill the connection settings, or choose Custom for any SMTP host. Nothing is stored — credentials are used only for this one connection.
Credentials are sent over HTTPS to our server, used for a single SMTP connection, and never logged or saved.
Test message
The test email is sent to a single recipient — usually your own inbox — so you can confirm it actually arrives.
Sending a test email requires a free account. Verifying a connection works without one.
How it works:This tool opens a real SMTP connection from our server to the host you specify, using the exact credentials and encryption you enter — pure SMTP, no provider APIs. “Verify connection only” runs the handshake and login without sending mail; “Send test email” delivers a message so you can confirm end-to-end delivery.