SpamCop FAQ : SpamCop Parsing and Reporting Service : How do I get my email program to reveal the full, unmodified email? :
These instructions are for web based email provided by Google (GMail)

1. Log into your GMail account.
2. Open the message you'd like to view headers for.
3. Click the down arrow next to Reply, at the top-right of the message pane.
4. Press the "Message Source" button to view the entire message, headers and all.
5. Select Show original.

The full headers will appear in a new window.

[Append to This Answer]