NSURL *url = [[NSURL alloc] initWithString:@"mailto:example@example.com?subject=This is my subject&body=this is the body"];
[[UIApplication sharedApplication] openURL:url];
You already asked this exact same question. Reposting in a new thread is both against the rules and exceptionally rude. I will certainly think twice before offering you further help or advice.
At the moment, I'm using the mailto in my app to produce an email.
In one of the iPhone Getting Started videos, the Apple presenter refers to a method within UIKit (when discussing "Application integration") to "create and prefill a message in mail".
Is he referring to the mailto URL, or is there another way that this can be done?