Guanacos Tech ES Book a Consultation

Free · No signup · Instant

What's hiding in your

Paste any email's raw headers. We trace every hop, verify SPF / DKIM / DMARC, and flag spoofing patterns in seconds.

Processed in memory and discarded. Nothing saved unless you opt in below.

Also free: Deliverability troubleshooter (SPF · DKIM · DMARC) · Talk to a specialist

Frequently asked questions

What is an email header analyzer?

It parses the raw headers of an email and shows the hop-by-hop delivery path, SPF, DKIM, and DMARC authentication results, timestamps, and any spoofing flags in a readable layout.

Is the email header analyzer free?

Yes. It is free and runs entirely in your browser with no signup. Paste the raw headers and get an instant breakdown.

How do I get the raw headers of an email?

In Gmail, open the message, click the three-dot menu, and choose "Show original". In Outlook, open the message and go to File then Properties to find the internet headers, then paste them into the analyzer.

Can it tell me whether SPF, DKIM, and DMARC passed?

Yes. The analyzer reads the Authentication-Results header and shows pass or fail for SPF, DKIM, and DMARC, plus alignment, so you can pinpoint exactly where authentication broke.