Email Header Analyzer
Parse RFC 5322 email headers — Received chain, SPF, DKIM, DMARC, Message-ID, hops, delays. 100% client-side.
About Email Header Analyzer
Parse RFC 5322 email headers — Received chain, SPF, DKIM, DMARC, Message-ID, hops, delays. 100% client-side. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.
FAQ
What does this tool do?
Parse RFC 5322 email headers — Received chain, SPF, DKIM, DMARC, Message-ID, hops, delays. 100% client-side.
Is my data sent to a server?
No. This tool runs 100% in your browser. Nothing is uploaded, tracked, or stored remotely. It works offline as a PWA.
What extra features does this tool have?
Extras: (1) Parse full RFC 5322 headers (folded lines, comments), (2) Received chain visualization with hop-by-hop delays, (3) SPF, DKIM, DMARC authentication results extraction, (4) Message-ID, In-Reply-To, References threading, (5) From/To/Cc/Bcc/Reply-To parsing with display names, (6) Date parsing with timezone conversion, (7) Total transmission time calculation, (8) Geolocation hint from Received IPs (offline DB), (9) Header folding/decoding (RFC 2047 encoded-words), (10) Suspicious header detection (mismatched From/Return-Path), (11) Export as JSON, copy individual headers, (12) PWA offline — paste headers anywhere
Does this work offline?
Yes — install as a PWA and use it without network. All processing happens client-side.
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