Email Header Analyzer

Paste your raw email headers to analyze routing hops, detect delays, and verify critical security authentications like SPF, DKIM, and DMARC.

Paste raw email headers

Disclaimer: This tool provides header analysis for informational and educational purposes only. It parses the headers provided locally in your browser. We do not store or transmit your email headers. While we strive for accuracy, we cannot guarantee the complete accuracy or reliability of the results provided.

Understanding Email Headers

Authentication Results

Headers reveal the exact outcome of SPF, DKIM, and DMARC checks performed by the receiving server. Crucial for verifying if an email is truly from the claimed sender or a spoofed phishing attempt.

Routing (Received Hops)

Each server that processes an email appends a 'Received' header. Analyzing these hops from bottom to top lets you trace the email's exact journey across the internet and identify suspicious origins.

True Sender Identities

While the standard 'From' address can be easily faked, observing discrepancies between the physical 'Return-Path' (Envelope-From) and the display 'From' can expose sophisticated spoofing.