Greetings

I am a newbie so please be gentle:-)

Am using OL2003, VSTO 2005SE with VS2005 (VB.NET)

I have managed to create an addin using VSTO a toolbar with dropdown on a
new mail message that adds a security classification to the subject line
before the mail is sent. What I am also trying to do is add a custom header
(X-Protective-Marking to the mail message before it is sent. I can't
easily see how to do this.

Any help or pointers so other examples would be greatly appreciated.

Cheers
Peter Lock
Palace Software