Parse email headers to trace delivery route, check SPF/DKIM/DMARC authentication, detect delays, and identify potential spam or phishing.
Email headers are metadata attached to every email message. They contain routing information, authentication results, timestamps, and server details. By analyzing headers, you can trace an email's journey from sender to recipient and verify its authenticity.
| Header | Purpose |
|---|---|
| From / Return-Path | Sender identification (can be spoofed) |
| Received | Server hop trail — shows delivery route |
| Authentication-Results | SPF, DKIM, DMARC pass/fail results |
| X-Spam-Status | Spam filter verdict |
| Message-ID | Unique email identifier |
Open the email → click the three dots (⋮) in the top right → select "Show original." This displays the full headers and source of the email.