Email Header Analyzer
Email Header Analyzer
Parse raw email headers and display them in a structured view: routing chain (Received hops with timestamps and delays), authentication results (SPF, DKIM, DMARC pass/fail), DKIM signature details, and a searchable all-headers table.
Parse raw email headers to inspect authentication (SPF/DKIM/DMARC), routing hops, and all header fields.
Email Header Analyzer
Parse raw email headers and display them in a structured view: routing chain (Received hops with timestamps and delays), authentication results (SPF, DKIM, DMARC pass/fail), DKIM signature details, and a searchable all-headers table.
Common uses
- Trace the routing hops of a suspicious email
- Check SPF/DKIM/DMARC results for an email
- Inspect DKIM signature headers
- Find the origin IP of a phishing email
Frequently asked questions
Is my data uploaded to a server?
Partially. The Domain Auth Checker tab sends the domain you enter to Cloudflare's DNS-over-HTTPS resolver to look up SPF/DMARC/DNSSEC records — that's unavoidable for a real lookup. The Analyzer and Reference tabs are fully local.