Real-time SMTP Testing

Test YourSMTP Server

Diagnose email delivery issues, verify authentication, and test your mail server configuration in seconds.

Why Use SMTP Tester?

Professional-grade SMTP diagnostics without the complexity.

Secure Testing

All connections are encrypted. Your credentials are never stored or logged on our servers.

Instant Results

Real-time connection testing with detailed logging. Know your SMTP status in seconds.

Debug Friendly

Verbose SMTP conversation logs help you pinpoint exactly where issues occur.

Frequently Asked Questions

Find answers to common questions about SMTP testing

SMTP (Simple Mail Transfer Protocol) is the protocol used to send emails. Testing your SMTP server helps verify that your mail configuration is correct, authentication works, and emails can be delivered successfully.

Quick Setup Guides

Common SMTP configurations for popular email providers

Gmail SMTP Settings

  • •SMTP Server: smtp.gmail.com
  • •Port: 587 (STARTTLS) or 465 (SSL/TLS)
  • •Username: your full Gmail address
  • •Password: Your Gmail password or App Password if 2FA enabled

Outlook SMTP Settings

  • •SMTP Server: smtp-mail.outlook.com
  • •Port: 587 (STARTTLS)
  • •Username: Your Outlook email address
  • •Password: Your Outlook password

Generic SMTP Server

  • •Ask your hosting provider or email service for SMTP details
  • •Verify the server address, port, and authentication method
  • •Test connection with your provided credentials
  • •Check server logs if connection fails

Need Help?

Couldn't find what you're looking for? Visit our documentation or check your email provider's help center for SMTP setup instructions.

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