Analyze Email Headers
Header Analysis
Authentication Results
Delivery Path (Hops)
Trace Email Delivery Path and Authentication
Understand how your emails travel from sender to recipient and identify authentication issues
Email headers contain a wealth of information about the email's journey from sender to recipient. Our analyzer parses these headers to show you the delivery path, authentication results (SPF, DKIM, DMARC), and any delays in transit. This is essential for troubleshooting email delivery problems.
What We Analyze
Delivery Path
Traces the email's route through mail servers, showing each hop.
Authentication
Checks SPF, DKIM, and DMARC authentication results.
Timing Analysis
Calculates delays between each hop to identify bottlenecks.
Message Details
Extracts key fields like From, To, Subject, Date, and Message-ID.
Tips
- Copy ALL headers — partial headers give incomplete results.
- In Gmail: open email → three dots → 'Show original' → copy headers.
- In Outlook: open email → File → Properties → Internet headers.
- Look for 'fail' in authentication results to diagnose delivery issues.
- Large delays between hops indicate server-side processing bottlenecks.
Frequently Asked Questions
Where do I find email headers?
In Gmail, open the email, click the three dots, and select 'Show original'. In Outlook, open the email, go to File → Properties, and copy from 'Internet headers'.
What do SPF/DKIM/DMARC pass/fail mean?
'pass' means the authentication check succeeded. 'fail' means it failed, which may cause the email to be rejected or sent to spam. 'none' means no record was found.
Is this tool secure?
Yes, all parsing happens in your browser. No email header data is sent to any server.