I'm not sure if other programs offer more properties from an incoming email. I think Outlook gives you all the properties that are available. Others may give a nicer display.
Have you tried using the senders IP ((if available. sometimes his computer name and IP address are available from the properties)or his/her mailservers DNS or IP (if available) and use a program like window's "tracert.exe" or WinRoute ( http://www.winroute.com ) for a better display of the senders origin.
There is a feature in Norton 2002 that can trace IP's right back to the source - I think it applies to e-mail.
Unfortuantely I'm not at home just now and won't be until the 5th Nov so I can't give you more details. I've used it before to hunt down admail sources. Basically it's an online feature that you get access to when you register the software.