Email Header Analyzer
Analyze raw email headers for SPF, DKIM, DMARC, sender alignment, relay hops, and delivery delays privately in your browser.
In Gmail use Show original; in Outlook use View message source or View headers.
Your email route and checks appear here
Paste the complete raw header to inspect authentication and delivery evidence. Message body content is not required.
Header health
SPF
Unknown
DKIM
Unknown
DMARC
Unknown
How to Get Headers
Open the message's original source or internet headers, copy the complete header section, and paste it above.
What Results Mean
Authentication results are evidence reported by receiving systems. A pass improves trust but does not prove a message is harmless.
Privacy & Limits
Analysis stays in your browser. Headers can contain addresses and IPs, so remove personal details before sharing reports.
Email Header Analyzer FAQs
Does this tool upload my email header? +
No. Parsing and report generation run locally in your browser.
Does an authentication pass guarantee safety? +
No. A legitimate or compromised account can still send harmful content.
Why are some relay times missing? +
A Received line may omit a parseable date or use a non-standard format.
Does this inspect attachments? +
No. It analyzes transport headers only, not message bodies or files.
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