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Email header analyzer

Paste a raw email header to inspect routing, authentication results and key metadata. Your header stays in your browser.

Parsed

What can email headers reveal?

Raw headers contain routing and authentication metadata added by mail systems as a message travels from sender to recipient. They can show Received hops, Authentication-Results, SPF, DKIM and DMARC outcomes, message IDs, dates and the apparent sender.

Privacy

This analyzer runs entirely in your browser. The pasted header is not sent to EmailValidly or stored by the service.