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How to View Email Headers in Outlook and Roundcube

Copy the full email header to help support investigate a delivery problem.
1
FIND THE MESSAGE

Open the affected email

  • Choose the message you want support to investigate.
  • Use the instructions below for your email app.
2
COPY THE DETAILS

Copy the full header

  • Select and copy all header text.
  • Avoid a cropped screenshot that leaves out lines.
3
CONTACT SUPPORT

Send it privately

  • Paste the header into your support ticket.
  • Include the affected address and a short description of the problem.

Share Headers Privately

Headers may contain private email addresses and routing details. Share them with support, not in a public post. Menu names vary by version.

Outlook vs Roundcube

Find the header in your email app.

Outlook

  • Classic Outlook for Windows: double-click the message, then File → Properties → Internet headers.
  • Outlook on the web: open the three-dot menu → View → View message details.

Roundcube

  • Open the message.
  • Select More or the three-dot menu → Show Source or Show Headers.