Email Header Analyzer

See the path an email took, delays per hop, SPF, DKIM and DMARC results, blacklists and why a bounce happened.

Paste the raw email or its headers, or drop an .eml file

Open .eml file

Look up DNS, blacklists & locations

The email is analyzed in your browser. Only IP addresses and domain names are sent to our server for the DNS and blacklist lookups.

How do I get the raw email?

Gmail: open the email, ⋮ menu → Show original → Copy to clipboard or Download original.
Outlook (web): ⋯ menu → View → View message source.
Outlook (desktop): open the email, File → Properties → Internet headers.
Apple Mail: View → Message → Raw Source.
Thunderbird: View → Message Source (Ctrl+U), or save the email as .eml and drop it here.