iCloud Mail at icloud.com hides this information, of course (as does MobileMe Mail). It is easy, though, to uncover it.
See Full Message Headers in iCloud Mail at icloud.com
To see all header lines of any email in iCloud Mail at icloud.com and in MobileMe Me.com Mail:
- Double-click the desired message to open it in a new window.
- Click the Actions gear button in the message's toolbar.
- Select Show Long Headers from the menu that comes up.
(Updated October 2011)
