I have created an application in C#.Net 2005 that sends Email with simple text messages as well as with attachment. Even user can send Email using Outlook from the application. 

Now I want to enhance the application by giving extra features, like...

If I'm sending mail from outlook from the application, I can show a symbol of my application on Outlook window.

And I can store all the selected messages of Outlook to my application's database by clicking on that application symbol.

Any idea / sample for this enhancement???

Thanks in advance.