Free tools · Mail
Email header parser
Paste the raw headers. This page never sends them anywhere — useful when mail is in spam or “why did this bounce”.
Mail that never arrives
Headers beat guessing
When a client says “we never got the form email”, the headers tell you whether SPF failed, DKIM was missing, or the message never left the first hop. Pair this with the DNS tool (MX, SPF, DMARC).
I set up business email DNS and form mail on UK sites as part of hosting and launch work. This parser is the first five minutes of that job.
FAQ
Header parser FAQs
Does this upload my email?
No. Parsing happens in your browser. The headers never leave your machine.
Where do I copy headers from?
Gmail: three dots → Show original. Outlook: View → View message details. Apple Mail: View → Message → All Headers. Paste the text block starting from Return-Path or Received.
Can you fix our SPF / DKIM?
Yes. Use the DNS tool plus this parser, then book a call if you want DNS records written and checked for a UK domain.
Mail not landing?
DNS, SPF, DKIM and form mail for UK business sites — fixed as part of hosting or a launch.
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Jump to another free checker or book help if you want it fixed for you.
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