Email Header Analyzer

Inspect SPF, DKIM, and DMARC results, trace delivery hops, and spot anomalies in raw email headers.

Email Header Input

Why analyze headers?

Email headers reveal how a message traveled, what servers handled it, and whether authentication checks passed. This helps identify spoofing attempts and misconfigurations in email delivery.

Tips for Analysis

Start from the topmost Received header to follow the delivery path backwards.
Check SPF, DKIM, and DMARC results to verify sender authenticity.
Look for mismatched From and Return-Path addresses (a common sign of spoofing).

Frequently Asked Questions

What information is in email headers?

Email headers contain routing details, authentication results, sender metadata, and timestamps that show how a message traveled.

How do SPF, DKIM, and DMARC help?

They help verify whether the sender is authorized and whether the message was altered during transit.

Is my email data sent to a server?

No. The analyzer runs locally in your browser and does not transmit your headers to our server.

Related Email Tools

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SPF Validator

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DMARC Check

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