gistfile1.m

- (void)viewDidLoad{
    [super viewDidLoad];
    if ([MFMailComposeViewController canSendMail]) {
        myButton.enabled = YES;
    }
}

- (IBAction)buttonPressed{
    MFMailComposeViewController *mailController = [[MFMailComposeViewController alloc] init];
    mailController.mailComposeDelegate = self;
    [mailController setSubject:@"My Subject"];
    [mailController setMessageBody:@"text text text" isHTML:NO];
    [self presentModalViewController:mailController animated:YES];
    [mailController release];

}

- (void)mailComposeController:(MFMailComposeViewController *)mailController didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
    
    [self becomeFirstResponder];
    [self dismissModalViewControllerAnimated:YES];
    
}

- (void)dealloc{
    [myButton release];
    [super dealloc];

}