SPF Lookup
Sender Policy Framework
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DomainKeys Identified Mail
DMARC Lookup
Email authentication
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Brand logo record
MTA-STS Lookup
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50+ DNSBL blacklists
Header Analyzer
Email header parsing
NS Lookup
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IP address details
Email Header analyzer
Paste your raw email header; the sender, recipient, traversed servers, delays and SPF/DKIM/DMARC results will be parsed automatically. The analysis runs entirely in your browser — your data is never sent to any server.
What does an email header tell us?
Every email carries a "header" block alongside its visible content. This block contains the servers the message traversed, who sent it, and authentication results (SPF, DKIM, DMARC).
By analyzing the header you can identify delivery problems (e.g. why the message went to spam), latency hotspots, and spoofed senders. Each Received: line is a hop, and the message progresses bottom-up.
What This Tool Reveals
- Sender / Recipient
From, To, Reply-To and Return-Path lines are parsed.
- Hop Chain
Received lines are ordered, and per-hop latency is computed.
- Auth Results
SPF, DKIM, DMARC pass/fail status is shown with badges.
- Total Latency
See total delivery time and the slow hops along the path.