Objective-C
Objective-C
Request a Return Receipt for an Email
See more Email Object Examples
Demonstrates the Chilkat Email.ReturnReceipt property. Set it to true to request a return-receipt when the message is received; this causes a Disposition-Notification-To header to be added when the email is sent. The default is false. This example enables the request.
Background: A return receipt (technically a Message Disposition Notification, MDN) asks the recipient's mail client to send back a small confirmation when the message is opened. It is only a request: the receiving client or server is free to ignore it, and many prompt the user before sending anything. Because of this, a return receipt is not reliable proof that a human actually read the message — treat it as a courtesy signal, not a guarantee.
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#import <CkoEmail.h>
// Demonstrates the Email.ReturnReceipt property. Set to true to request a
// return-receipt when the email is received. This causes a Disposition-Notification-To
// header to be added when the email is sent. The default is false.
CkoEmail *email = [[CkoEmail alloc] init];
email.Subject = @"Please confirm receipt";
email.Body = @"Kindly confirm you received this message.";
email.From = @"alice@example.com";
[email AddTo: @"Bob" emailAddress: @"bob@example.com"];
// Request a return receipt.
email.ReturnReceipt = YES;
NSLog(@"%@%d",@"ReturnReceipt = ",email.ReturnReceipt);