Receiving Notifications for Successfully Sent and Failed Messages

When you want to get the delivery notification for both successfully sent and failed messages, you can use the pipe (|) operator for the DeliveryNotificationOptions property of the MailMessage class. The following code snippet shows you how to receive notifications for successfully sent and failed messages.

// For complete examples and data files, please go to https://github.com/aspose-email/Aspose.Email-for-.NET

                // Create the message
                MailMessage msg = new MailMessage();
                msg.From = "[e-mail]";
                msg.To = "[e-mail]";
                msg.Subject = "the subject of the message";

                // Set delivery notifications for success and failed messages and Add the MIME headers
                msg.DeliveryNotificationOptions = DeliveryNotificationOptions.OnSuccess | DeliveryNotificationOptions.OnFailure;
                msg.Headers.Add("Read-Receipt-To", "[e-mail]");
                msg.Headers.Add("Disposition-Notification-To", "[e-mail]");

                // Send the message
                SmtpClient client = new SmtpClient("host", "username", "password");
                client.Send(msg);