SMTP Diag Tool
SMTP Diag Tool is a free, open-source Windows application used to diagnose issues with sending and receiving emails. It can test SMTP servers, validate email addresses, verify DNS records, and check for common email delivery problems.
SMTP Diag Tool: Diagnose Email Sending Issues
A free, open-source Windows application to test SMTP servers, validate email addresses, verify DNS records, and check for common email delivery problems.
What is SMTP Diag Tool?
SMTP Diag Tool is a free, open-source Windows application designed to help diagnose issues with sending and receiving emails. It provides a suite of tools to test various aspects of the email delivery process and identify possible problems.
Key features of SMTP Diag Tool include:
- SMTP server testing - Validate connections to SMTP servers, check server responses, and confirm emails can be sent and received properly.
- Email address verification - Verify the validity of email addresses and domains.
- DNS record checks - Check that DNS MX and A records are configured correctly for a domain.
- Email diagnostic tests - Check for issues like greylisting, spam filtering, mailbox full errors, and more.
- Connection logging - Log SMTP connections for troubleshooting.
- Custom email headers - Add custom headers to test messages to check handling.
- Portable application - Runs on any Windows machine without needing installation.
Overall, SMTP Diag Tool is a useful utility for diagnosing email delivery issues, validating SMTP servers, and troubleshooting problems that prevent emails from being sent and received correctly.
SMTP Diag Tool Features
Features
- Test SMTP servers
- Validate email addresses
- Verify DNS records
- Check for common email delivery issues
Pricing
- Free
- Open Source
Pros
Free and open source
Easy to use interface
Provides detailed diagnostic information
Can test both sending and receiving emails
Lightweight and fast
Cons
Limited to testing SMTP only
No support for other protocols like IMAP or POP3
May not catch every potential email delivery issue
Basic feature set compared to paid tools
Reviews & Ratings
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