📧 SMTP TLS Relay Checker

Test SMTP encryption, authentication & relay

🔒 Privacy Notice: Credentials are sent directly to your SMTP server over TLS. We do NOT store, log, or save any passwords. Use a test account if preferred.

About This Tool

Tests SMTP server TLS encryption, certificate validity, authentication methods, and relay configuration. No email is actually sent during relay testing.

Need help? BinaryBridge can configure secure email infrastructure.

Chat with Sarah

BinaryBridge Inc.

Hi! I see you're testing SMTP servers. Need help understanding TLS settings, ports, or authentication?