Email Header Analyzer

Your email headers never leave your browser

Raw email headers

Paste the raw headers of an email to reconstruct its delivery path, check SPF/DKIM/DMARC results, and look for signs of a spoofed sender.

About the Email Header Analyzer

Every email carries a hidden record of its own delivery: the servers it passed through, the timestamps at each hop, and the authentication checks the receiving server ran. This tool parses that record from headers you paste in and reconstructs the delivery timeline, SPF/DKIM/DMARC verdicts, and spoofing red flags entirely in your browser.

Header content routinely includes real names, addresses, and internal hostnames, so nothing here is written to the URL, localStorage, or sent to a server. There is no shareable-link URL state, by design.

Quick Tips

Received headers read bottom-to-top — the analyzer reorders them into a chronological timeline for you
A single failed check rarely means spoofing on its own — weigh the full flag list together
Gmail: "Show original". Outlook: message details / internet headers. Apple Mail: View > Message > All Headers
Cross-check SPF/DKIM/DMARC against a domain's actual DNS records with the Domain Intelligence Dashboard