add an UIImage in MailComposer Sheet of MFMailComposeViewController in iPhone

- (void)createEmail {
//Create a string with HTML formatting for the email body
    NSMutableString *emailBody = [[[NSMutableString alloc] initWithString:@""] retain];
 //Add some text to it however you want
    [emailBody appendString:@"Some email body text can go here
"];
 //Pick an image to insert
 //This example would come from the main bundle, but your source can be elsewhere
    UIImage *emailImage = [UIImage imageNamed:@"myImageName.png"];
 //Convert the image into data
    NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(emailImage)];
 //Create a base64 string representation of the data using NSData+Base64
    NSString *base64String = [imageData base64EncodedString];
 //Add the encoded string to the emailBody string
 //Don't forget the "" tags are required, the "" tags are optional
    [emailBody appendString:[NSString stringWithFormat:@"

",base64String]];
 //You could repeat here with more text or images, otherwise
 //close the HTML formatting
    [emailBody appendString:@""];
    NSLog(@"%@",emailBody);

 //Create the mail composer window
    MFMailComposeViewController *emailDialog = [[MFMailComposeViewController alloc] init];
    emailDialog.mailComposeDelegate = self;
    [emailDialog setSubject:@"My Inline Image Document"];
    [emailDialog setMessageBody:emailBody isHTML:YES];

    [self presentModalViewController:emailDialog animated:YES];
    [emailDialog release];
    [emailBody release];
}

http://stackoverflow.com/questions/1527351/how-to-add-an-uiimage-in-mailcomposer-sheet-of-mfmailcomposeviewcontroller-in-iph

or

MFMailComposeViewController *mail = [[MFMailComposeViewController alloc] init];
 mail.mailComposeDelegate = self;
 if ([MFMailComposeViewController canSendMail]) {
  //Setting up the Subject, recipients, and message body.
  [mail setToRecipients:[NSArray arrayWithObjects:@"address@example.com",nil]];
  
  [mail setSubject:@"iCostume"];
  [mail setMessageBody:@"Your custom costume picture" isHTML:NO];
  
  
  
  UIImage *pic = [self imageToShare];
  NSData *exportData = UIImageJPEGRepresentation(pic ,1.0);
  [mail addAttachmentData:exportData mimeType:@"image/jpeg" fileName:@"Picture.jpeg"];
  //Present the mail view controller
  [self presentModalViewController:mail animated:YES];
 }
 //release the mail
 [mail release];