Email Header Analyzer - Parse & Trace Email Headers
Free email header analyzer to parse headers, trace email routes, check SPF/DKIM/DMARC authentication, and troubleshoot email delivery issues.
How to get headers: In Gmail, click "Show original". In Outlook, go to File → Properties. Copy all the text shown.
Paste email headers and click Analyze
Email headers contain crucial metadata about email messages, including routing information, authentication results, and timestamps. Our free email header analyzer helps you parse these headers to troubleshoot delivery issues, verify sender authenticity, check SPF/DKIM/DMARC authentication, and trace the path an email took through various servers.
What You Can Analyze:
Email Authentication
Verify SPF, DKIM, and DMARC authentication status to ensure email legitimacy
Email Route Tracing
Track the path an email took through different mail servers
Delivery Time Analysis
Calculate how long an email took to be delivered
Server Hop Detection
Identify all mail servers that handled the email
What are email headers?
Email headers contain metadata about an email message, including sender/recipient information, routing details through various mail servers, authentication results (SPF, DKIM, DMARC), timestamps, and technical information about how the email was transmitted. Headers are essential for troubleshooting email delivery issues and verifying email authenticity.
How do I view email headers?
In Gmail, open the email and click the three dots menu, then select "Show original". In Outlook, open the email, go to File → Properties, and copy the headers from the Internet headers box. In Apple Mail, select View → Message → All Headers. Most email clients have a similar "view source", "show headers", or "message details" option in their menus.
What is SPF, DKIM, and DMARC?
SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication) are email authentication methods that help prevent email spoofing and phishing. SPF verifies the sending server is authorized, DKIM validates message integrity with cryptographic signatures, and DMARC provides policy enforcement based on SPF and DKIM results. All three together provide strong email authentication.
Why analyze email headers?
Analyzing email headers helps troubleshoot delivery issues, identify spam or phishing attempts, verify sender authenticity, trace email routing paths to find delays, check authentication status for security purposes, diagnose email filtering problems, and understand why emails might be going to spam folders. It's an essential tool for email administrators and anyone dealing with email deliverability issues.
Is email header analysis secure?
Yes, our email header analyzer processes everything in your browser using client-side JavaScript. No email headers are sent to our servers or stored anywhere. The analysis is performed entirely on your device for maximum privacy and security. Your email content and headers remain completely private.