Content is not executed; only explainable static patterns and bounded browser operations are applied.
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Privacy & security
Email Header Analyzer
Parses folded header lines and summarizes Received order, From/Reply-To, and SPF, DKIM, or DMARC claims in Authentication-Results. It does not cryptographically verify signatures or guarantee sender identity.
✓ Free✓ No account✓ In-browser
QUICK ANSWER
What does this tool do?
Inspect raw email headers for route, authentication, and inconsistency signals.
APPLICATION AND DECISION GUIDE
Email Header Analyzer: method and usage
Parses folded header lines and summarizes Received order, From/Reply-To, and SPF, DKIM, or DMARC claims in Authentication-Results. It does not cryptographically verify signatures or guarantee sender identity.
synthetic or minimized code, configuration, identifiers, or file content you are authorized to review Confirm the shape first with a small example containing no personal data.
evidence locations, severity, false-positive considerations, and the next verification action
Practical steps
- Mask personal addresses if needed and paste headers.
- Review the local summary and warnings.
- Verify suspicious mail with your provider without opening links.
manual review at the source location and independent verification with an appropriate professional security tool or authorized process
This is a pre-check, not a guarantee of identity, security, or regulatory compliance.
Suitable use cases
- Phishing pre-review
- Delivery-route debugging
- Email education
LEARN THE WORKFLOW
Guides for this tool
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Read guide →ABOUT THIS TOOL
Frequently asked questions
What input does Email Header Analyzer accept?+
synthetic or minimized code, configuration, identifiers, or file content you are authorized to review Mask personal addresses if needed and paste headers.
What does Email Header Analyzer return?+
evidence locations, severity, false-positive considerations, and the next verification action Content is not executed; only explainable static patterns and bounded browser operations are applied.
How should I validate Email Header Analyzer output?+
manual review at the source location and independent verification with an appropriate professional security tool or authorized process
Does Email Header Analyzer send or store input on a server?+
Tool input is processed in the active tab. Saving to the Workstation or transferring to another tool is a separate choice. Consider browser extensions and shared devices separately; the privacy page explains advertising and network connections.