What I already found is
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@\"mailto:\"]];
But I just want to open the Mail ap
Expanding on Amit's answer: This will launch the mail app, with a new email started. Just edit the strings to change how the new email begins.
//put email info here:
NSString *toEmail=@"supp0rt.fl0ppyw0rm@gmail.com";
NSString *subject=@"The subject!";
NSString *body = @"It is raining in sunny California!";
//opens mail app with new email started
NSString *email = [NSString stringWithFormat:@"mailto:%@?subject=%@&body=%@", toEmail,subject,body];
email = [email stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:email]];