Email Header Analyzer

paste headers, get a human-readable breakdown

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How to find email headers

Gmail

  1. Open the email
  2. Click the three-dot menu (top right)
  3. Select "Show original"
  4. Copy all text from the new tab

Outlook (web)

  1. Open the email
  2. Click the three-dot menu
  3. Select "View" → "View message source"
  4. Copy all text

Apple Mail

  1. Open the email
  2. Go to View → Message → Raw Source
  3. Copy all text
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