Email Header Analyzer
Headers can be forged and may contain sensitive personal data. Results are unverified: no cryptographic or mail-server verification is performed. This tool does not upload or save your data.
Headers can be forged and may contain sensitive personal data. Results are unverified: no cryptographic or mail-server verification is performed. This tool does not upload or save your data.
Up to 100,000 characters and 2,000 lines. Only the header block before the first blank line is parsed.
Paste raw email headers to begin.
Date, From and Message-ID
Received lines
Received lines are shown bottom to top, the usual claimed oldest-to-newest order. This does not establish origin, delivery order or trust.
Visible authentication result headers
No IP tracing, DNS/domain requests, signature checks or decoded address/date interpretation. Authentication-Results, ARC-Authentication-Results and Received-SPF are shown as raw claims.
A QUICK WALKTHROUGH
How to use this tool
- Paste only the raw header block, analyze, then review the unverified fields and clear sensitive data.
Received lines
Received lines are shown bottom to top, the usual claimed oldest-to-newest order. This does not establish origin, delivery order or trust.
Visible authentication result headers
No IP tracing, DNS/domain requests, signature checks or decoded address/date interpretation. Authentication-Results, ARC-Authentication-Results and Received-SPF are shown as raw claims.
Raw email headers
Up to 100,000 characters and 2,000 lines. Only the header block before the first blank line is parsed.
GOOD TO KNOW
Common questions
Does a pass result prove the email is authentic?
No. A pasted pass is a claim that can be forged. Use a trusted mail system for actual authentication.