SMTP Email Tester
SMTP Email Tester Tool – Verify Server Settings & Troubleshoot Issues
Ensure your email server is configured correctly with our free SMTP Email Tester tool. Test SMTP authentication, port settings, and email delivery in seconds—perfect for developers, IT admins, and business owners.
Why Use This SMTP Tester?
✅ Quick Diagnostics – Verify SMTP server connectivity instantly
✅ Troubleshoot Errors – Detect authentication or port configuration issues
✅ Real-Time Testing – Send test emails to validate delivery
✅ Secure & Private – No logs stored; tests run on your server
How It Works
Enter SMTP Details – Host, port, username, and password
Set Encryption – Choose TLS, SSL, or none
Send Test Email – Validate inbox delivery
Review Results – Get detailed success/error reports
Common SMTP Issues Detected
🔹 Incorrect port settings (25, 465, 587)
🔹 Authentication failures (invalid credentials)
🔹 Firewall/ISP blocking outbound SMTP
🔹 Missing or misconfigured encryption (TLS/SSL)
Pro Tips for SMTP Success
✔ Always use port 587 with TLS for modern email clients
✔ Double-check username/password for typos
✔ Whitelist your IP if emails are marked as spam
✔ Test with multiple recipients (Gmail, Outlook, Yahoo)