Free Tool ยท Vib Tools

SMTP Checker

Test SMTP connection, authentication, TLS/SSL and send a branded HTML email.

https://vib.tools/

SMTP Details

Passwords are never saved by this tool. Private and localhost hosts are blocked for public safety.

Test Result

Fill SMTP details and run a test. Full server conversation will appear here without showing secrets.

Recommended Ports

  • 465 = SSL
  • 587 = TLS / STARTTLS
  • 25 or 2525 = depends on server policy