Free Online Developer Tools

Inspect, validate, transform, and troubleshoot technical data quickly and clearly.
Developer Tools

Email Header Analyzer

Analyze raw email headers to inspect sender metadata, delivery hops, message IDs, and SPF, DKIM, and DMARC results.

Analyze raw email header

Result

Status Ready
Header Fields 0
Received Hops 0
SPF -
DKIM -
DMARC -
Header Result
Waiting for header input

About this tool

Email Header Analyzer parses raw email headers and helps you inspect routing, sender details, authentication results, received hops, originating IP candidates, and common message metadata. It is useful for troubleshooting delivery issues, spam checks, mailbox analysis, and technical support work.

How to use Email Header Analyzer

  1. Copy the raw email header from your email service or mail client.
  2. Paste the full header block into the input area.
  3. Click Analyze Header.
  4. Review the parsed summary, authentication results, routing hops, and metadata fields.
  5. Copy the analysis or use the sample header to understand how the tool works.

Why use Email Header Analyzer?

Email Header Analyzer helps you inspect how a message traveled, whether SPF, DKIM, and DMARC were detected, which servers handled the email, and what technical details may explain delivery or spam problems. It is useful for administrators, support teams, marketers, and everyday users who need clearer visibility into email delivery.

Frequently Asked Questions

What does Email Header Analyzer do?

It parses raw email headers and extracts useful fields such as From, Return-Path, Message-ID, authentication results, and received server hops.

Can it show SPF, DKIM, and DMARC results?

Yes. If those values are present in the header, the tool detects and summarizes them.

Does this tool send my email data anywhere?

No. This tool works in your browser and analyzes the header text locally on the page.

Who is this tool useful for?

It is useful for developers, system administrators, support teams, marketers, and anyone troubleshooting email delivery or spam classification issues.