Email Headers Parser
Parses raw email headers from a received message. Extracts From, To, Subject, Received hops, Authentication-Results (SPF/DKIM/DMARC), and Message-ID.
Splits header block by newlines, identifies known headers, surfaces the SPF/DKIM/DMARC results from Authentication-Results.
Troubleshooting deliverability. Verifying SPF/DKIM/DMARC results on a specific message. Tracing email hop path.
FAQ
How do I view raw email headers?+
Gmail: open email > three-dot menu > Show original. Outlook: open email > File > Properties > Internet headers.
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We update these pages when the underlying mechanics change — new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.