TML attachment help..

[smsawant]

i am attaching image in email.but how can we attach html file in email ?
here is code by which i am attaching image file in an email.

UIImage *artworkImage = viewImage;
	NSData *artworkJPEGRepresentation = nil;
	if (artworkImage) 
	{
		artworkJPEGRepresentation = UIImageJPEGRepresentation(artworkImage, 0.7);
	}
	if (artworkJPEGRepresentation)
	{
		[composeVC addAttachmentData:artworkJPEGRepresentation mimeType:@"image/jpeg" fileName:@"Image.jpg"];
	}
	[self presentModalViewController:composeVC animated:YES];
	[composeVC release];

i have tried following code to attach html file but it is not working.

NSData* htmlAttach = [NSData dataWithContentsOfFile:filepath];
[composeVC addAttachmentData:htmlAttach
                    mimeType:@"text/html"
                    fileName:@"html-file.html"];

How can we attach HTML?.
I don't want to set HTML as body, i want to send HTML as attachment.

this is very urgent.
kindly guide me regarding this issue.