To view the e-mail header information:
In the left pane, click Mail.
In the Folders list, click Inbox.
Right-click the message in the message list, and then click View source.
Please note, this does not work on the classic version of Windows Live Hotmail,
you should use full version of Hotmail.
Right-click the message in the message list
then click View source
Hotmail open new tab to show headers
