Email header analyzer
Inspect message headers for SPF, DKIM, DMARC, routing, and identity clues.
Live tool
Analyze headers
What is it?
Email headers contain delivery hops, authentication results, sender information, and message identifiers.
Why is it important?
They help explain spoofing, delivery failures, routing delays, and authentication problems.
How do you improve it?
Paste the complete raw headers, review failed authentication, and investigate unexpected routing hops or sender identities.
How DomainShield Tower checks it
We inspect publicly available DNS, TLS, website, and reputation signals and explain the result in a report. Scanning is read-only and does not change your infrastructure.
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