Trace an email with its full header

You can check the full header of an email you received from a Gmail account to know where it's from.

View & copy the full header of an email

Analyze an email header

  1. On your computer, open Gmail.
  2. Open the email that you want to analyze.
  3. Next to Reply , click More Moreand then Show original.
    • In a new window, the full header shows.
  4. Click Copy to clipboard.
  5. Open Google Admin Toolbox Messageheader.
  6. In the box, paste your header.
  7. Click Analyze the header above.

Check if an email is delayed

  1. On your computer, open Gmail.
  2. Open the email that you want to check.
  3. Next to Reply , click More More and then Show original.
    • In a new window, the full header shows.
  4. Next to "Created at," check the delivery time.
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