Not sure what you mean. The MailMessage API is pretty easy to use - it's maybe 10 lines of code to send a message. Doesn't get much easier than that...
Do a Google search on System.Net.Mail and you'll get plenty of simple examples...
+++ Rick ---
>>>I want to add a feature similar (very similar) to the Windows feature Send To->Mail Recipient from the explorer context menu to my app. Has anyone seen example of this?
>>
>>Doesn't System.Net.Mail do what you want?
>>
>>
http://msdn2.microsoft.com/en-us/library/system.net.mail.aspx>>
>>+++ Rick ---
>
>It does more than what I want :) I want to make a simple interface that piggy-backs on sendmail.dll.