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SMTP Live Tester

Test any SMTP server connection in real-time. Enter your credentials securely and validate your email configuration.

Connection Settings

Secure Connection: Your credentials are sent directly to the SMTP server via encrypted connection. We do not store any passwords.
smtp-tester
// Enter your credentials and click "Test Connection" to begin...

Port 587

Standard port for TLS/STARTTLS connections. Recommended for most setups.

Port 465

SSL/TLS wrapped connections. Use if port 587 is blocked.

Port 25

Plain SMTP. Often blocked by ISPs. Use only for relay servers.

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