Email Header Analyzer

Paste raw email headers to trace delivery hops and delays.

In Gmail: “Show original”. In Outlook: File → Properties → Internet headers.

Related tools

SPF CheckerFetch and validate a domain's SPF record, with the 10-lookup limit in mind.DKIM CheckerLook up a DKIM public key by selector and domain.DMARC CheckerRead and explain a domain's DMARC policy (p, rua, pct, alignment).Email VerifierValidate an address: syntax, domain MX, role/disposable, live mailbox probe.

Frequently asked questions

What does an email header analyzer do?

It parses the raw headers of an email to show the delivery path (each Received hop and the delay between them) and the SPF, DKIM and DMARC authentication results.

How do I get the raw email headers?

In Gmail choose "Show original"; in Outlook open File then Properties and copy the Internet headers; in Apple Mail use View then Message then Raw Source.

Why does the delivery path matter?

Large gaps between hops can reveal where an email was delayed, and the chain of servers helps spot spoofing or unexpected relays.