I have briefly explored this topic but it seems the answer is there is no direct way to send email from the app. Although you can do the following:
-(void) sendEmail {
NSURL* mailURL = [NSURL URLWithString: @"mailto:
f...@example.com?cc=
b...@example.com&subject=Greetings%20from%Cupertino!&body=Wish%20you%20were%20here!"];
[[UIApplication sharedApplication] openURL: mailURL];
}
your app will quit to give way to the iPhone email app.