Email Header Analyzer
Paste email headers or a full email message to analyze the delivery path, authentication results, and detect anomalies.
What this tool analyzes
- Received Chain: Track the email's path through servers with timing analysis
- Authentication Results: Parse existing SPF, DKIM, DMARC results from headers
- DKIM Signatures: Extract signing domain, selector, and algorithm details
- ARC Chain: Authenticated Received Chain information for forwarded messages
- Security Headers: Spam scores, virus scanning, and other security indicators
- Mail Client Detection: Identify the email client or server software
- Anomaly Detection: Find potential issues like missing headers or timing problems
How to get email headers
Gmail
Open the email → Click the three dots menu → "Show original" → Copy the headers
Outlook
Open the email → File → Properties → "Internet headers" section
Apple Mail
Open the email → View → Message → All Headers
Thunderbird
Open the email → View → Message Source (or Ctrl+U)