Send bulk mail (newsletter) to recipients, and handle bounce mail

 SmtpClient cls = new SmtpClient("Your N/W IP or your sys 
IP");

cls.SendCompleted += new 
SendCompletedEventHandler(cls_SendCompleted);
In this event you can chk the 
status of System.ComponentModel.AsyncCompletedEventArgs

You can write a 
condition 
if (e.Cancelled)
{
Now you can do your operations 
here....
}

 

 static void ReadReceipts()
{
//create the mail message
MailMessage 
mail = new MailMessage();

//set the addresses
mail.From = new MailAddress("[email protected]");
mail.To.Add("[email protected]");

//set the content
mail.Subject = "This is an email";
mail.Body = "this 
is the body content of the email.";

//To request a read receipt, we need add a custom header named 
'Disposition-Notification-To'
//in this example, read receipts will go back 
to '[email protected]'
//it's 
important to note that read receipts will only be sent by those mail clients 
that 
//a) support them
//and
//b)have them 
enabled.
mail.Headers.Add("Disposition-Notification-To", "<[email protected]>");


//send the message
SmtpClient smtp = new 
SmtpClient("127.0.0.1");
smtp.Send(mail);
}