Free tools for preparing, validating, and scaling outbound email safely.
Parse email headers locally.
Paste raw headers to see authentication results, Received hops, identity fields, and TLS indicators — as reported by the receiving server.
Empty
Paste raw headers from a test message to see authentication and routing details.
Why this matters
Reading authentication results is part of safer outbound.
What headers reveal
Authentication-Results and Received hops show how a message traveled and how the receiving server evaluated SPF, DKIM, and DMARC.
Reported, not verified
Results are displayed as the receiving server reported them. This tool does not independently re-verify DNS or signatures.
Parsed locally
Headers are unfolded and parsed in your browser. Nothing is uploaded to OmniReach servers.
Related: Spam Content Checker · SPF Record Generator · SPF Checker
Straight answers
Email Header Analyzer FAQ
Where do I get raw headers?+−
In Gmail: open the message, ⋮ → Show original. In Outlook: open the message, File → Properties → Internet headers. Copy everything from Return-Path through the last Received line.
Why is Authentication-Results missing?+−
Some providers omit it on forwarded mail or internal routing. The analyzer will flag missing auth headers as a warning.
Does this fix deliverability?+−
No. It helps you read what already happened. Fix SPF, DKIM, and DMARC in DNS and your ESP, then send a test and analyze again.
Next step
Headers read. Ready to run outreach you approve first.
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