SMTP Checker
Test email servers, verify SMTP configuration, check blacklist status, and validate email deliverability with comprehensive analysis and security checks.
Checking SMTP server...
This may take a few seconds
Email Deliverability Score
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out of 100SMTP Statistics
Server Status & Connectivity
Connection Details
Quick Actions
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How to Use SMTP Checker
Enter email address, domain, or SMTP server hostname.
Select port and check mode (Quick, Comprehensive, or Security).
View connectivity, security analysis, and deliverability recommendations.
Frequently Asked Questions
An SMTP Checker tests your mail server’s connectivity and verifies whether it can send and receive emails properly.
Testing helps diagnose email delivery failures, authentication issues, and incorrect server configurations.
No. The tool is beginner-friendly — just enter your SMTP server details to start testing.
Yes, it checks login credentials, port configuration, and server response codes.
Yes, your server details are only used for real-time tests and are not stored.
