The Email Header Analyzer parses raw message headers into a readable report: every Received hop in order,
the delay at each server, and the SPF, DKIM and DMARC authentication results. Paste headers from any mail
client to trace where a message actually came from and where it slowed down. Learn more about
email security
and
SPF, DKIM, DMARC.
Example Output
Illustrative sample of the tool's report format, showing a clean Gmail-to-Google-Workspace delivery, captured June 2026. Paste your own headers above for a full analysis.
Authentication Results
| Check | Result | Details |
|---|---|---|
| SPF | pass | Sender IP authorized by the domain's SPF record |
| DKIM | pass | Signature verified, selector google |
| DMARC | pass | Aligned, policy p=reject |
Delivery Path
| Hop | Server | TLS |
|---|---|---|
| 1 | mail-sender.example.com | TLS 1.3 |
| 2 | mx.google.com | TLS 1.3 |
| 3 | mail.recipient-workspace.com | TLS 1.3 |
The full report also includes a summary, hop-by-hop timing, spam and security scores, and raw headers.
... Analyzing email headers ...
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