I would;
Search google, and google usenet forums for the format of the outlook email, or you could try saving a test email message (send one to your self, and then drag it onto the desktop) opening it in notepad or a hex editor and seeing what it looks like; if your lucky its XML format and therefore easy, otherwise it will be a long task (but not toooo long) to deciper the way it works - you would just have to repeat the proccess; changing the settings in the test email each time and noting the differences - you would/could eventually work out the format yourself.
I could do this for you, but I would not be able to do it for free. Please PM me if you have no luck on google or doing it your self...