How to find the full headers in Outlook and Outlook.com

We need the complete original headers to trace your message. The steps differ slightly between the desktop app and the web version.

Outlook.com (web): 1. Open the email. 2. Click the three-dot menu at the top of the message. 3. Choose View then View message source. 4. Select all the text shown and copy it.

Outlook desktop (Windows): 1. Double-click the email to open it in its own window. 2. Go to File then Properties. 3. The full headers appear in the Internet headers box at the bottom — select all and copy.

Paste the copied text into your order, or save it to a text file and attach it. Please don't retype or summarise the headers; we need them verbatim, as even small changes can break the trace.