Email Header Parser
Paste email headers to analyze routing, authentication, and other delivery details.
● Runs in your browserNothing is storedFree
Email headers
Analysis
Routing, authentication and every header appear here.
- 01In Gmail, open the message menu and choose "Show original" to see the raw headers.
- 02Copy the headers and paste them into the text area above.
- 03Click "Parse Headers" to see the sender, recipient, SPF and DKIM results, and every routing hop.
🔒Private by default. This tool is designed for convenience and does not store any of your data. All processing is done in your browser.