Application objOutlook = new ApplicationClass();
NameSpace objNS = objOutlook.GetNamespace("MAPI");
MailItem objmail = (MailItem)objOutlook.CreateItem(OlItemType.olMailItem);
objmail.To = "firstname.lastname@example.org;
objmail.BCC = "email@example.com";
objmail.CC = "firstname.lastname@example.org";
objmail.Subject = "Subject of the email goes here";
objmail.Body = "Body of the email goes here...";
You dont have to use all the above mentioned attributes (To, BCC, CC, body etc) if you dont want to.
You would also have to include the Microsoft Office Libraries. Right click on the project on visual studio, select 'Add Reference'
Select 'COM' tab
Scroll down to 'Microsoft Office 12 Object Library and add it.
Add Microsoft Outlook Object Library as well.