Question

I have a button in my app called contact Us! Is there a way to open up the Eamil client in iPhone filled with To and Subject that I provide?

Answer 1

You will want to use the MFMailComposeViewController class. Here’s the relevant part from Apple’s MailComposer example:

MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;

[picker setSubject:@"Hello from California!"];

// Set up recipients
NSArray *toRecipients = [NSArray arrayWithObject:@"[e-mail]"]; 
[picker setToRecipients:toRecipients];

[self presentModalViewController:picker animated:YES];
[picker release];

The MailComposer sample also shows you how to open the external mail app:

NSString *recipients = @"mailto:[e-mail]&subject=Hello from California!";
NSString *body = @"&body=It is raining in sunny California!";

NSString *email = [NSString stringWithFormat:@"%@%@", recipients, body];
email = [email stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:email]];