Email Header Analyzer

Paste raw email headers to check SPF, DKIM, DMARC results, trace the delivery path and spot spam signals.

In Gmail: open email → ⋮ menu → "Show original". In Outlook: File → Properties. Copy everything from the header section.

How to Use This Tool

  1. 1Open the problematic email in your email client
  2. 2Find the "View Original", "View Source" or "Show Raw Message" option
  3. 3Copy the entire header block
  4. 4Paste it into the input box below
  5. 5Click Analyse Headers

Frequently Asked Questions

Where do I find email headers in Gmail?

Open the email, click the three-dot menu (⋮), select "Show original". The full headers appear at the top of the page.

What is SPF/DKIM/DMARC?

SPF verifies the sending server is authorised. DKIM adds a cryptographic signature. DMARC tells receivers what to do with failing messages. All three improve deliverability.

Why is my email going to spam?

Common causes: missing SPF/DKIM/DMARC records, sending from a new IP, low sender reputation, or spam trigger words in the content.

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