Email Header Analyzer
Paste your raw email headers for a human-readable breakdown.
Understanding Email Headers
Email headers contain metadata about the email's journey from sender to recipient. They reveal authentication results, routing information, and potential issues.
Key Headers to Look For
- Received: Shows each server the email passed through
- Authentication-Results: SPF, DKIM, DMARC results
- DKIM-Signature: The DKIM signature details
- Return-Path: The bounce address (envelope sender)
- X-Spam-Status: Spam filter results