Send a Bundle of Emails via SMTP

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Demonstrates the Chilkat MailMan.SendBundle method, which sends each email in an EmailBundle. This is equivalent to calling SendEmail once for each email in the bundle. This example builds a bundle of two messages and sends them.

Background: Sending a bundle lets Chilkat reuse a single SMTP connection for all the messages, avoiding the connect/authenticate overhead of sending them one at a time — the same efficiency as the explicit open/send-loop/close pattern, in one call. It is handy for dispatching a queued batch of distinct messages (as opposed to one message to many recipients).

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bool success = false;

//  Demonstrates the MailMan.SendBundle method, which sends each email in an EmailBundle.
//  This is equivalent to calling SendEmail once for each email in the bundle.

Chilkat.MailMan mailman = new Chilkat.MailMan();

//  Configure the SMTP server connection.
mailman.SmtpHost = "smtp.example.com";
mailman.SmtpPort = 465;
mailman.SmtpSsl = true;
mailman.SmtpUsername = "user@example.com";
mailman.SmtpPassword = "myPassword";

//  Build a bundle of emails to send.
Chilkat.EmailBundle bundle = new Chilkat.EmailBundle();

Chilkat.Email email1 = new Chilkat.Email();
email1.Subject = "Message 1";
email1.From = "alice@example.com";
email1.AddTo("Bob","bob@example.com");
email1.Body = "This is the first message.";
bundle.AddEmail(email1);

Chilkat.Email email2 = new Chilkat.Email();
email2.Subject = "Message 2";
email2.From = "alice@example.com";
email2.AddTo("Carol","carol@example.com");
email2.Body = "This is the second message.";
bundle.AddEmail(email2);

//  Send every email in the bundle.

success = mailman.SendBundle(bundle);
if (success == false) {
    Debug.WriteLine(mailman.LastErrorText);
    return;
}

Debug.WriteLine("Sent " + Convert.ToString(bundle.MessageCount) + " emails.");

//  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
//  connects and authenticates -- using the property settings above -- whenever a server
//  operation requires it.  Calling the explicit connect/authenticate methods can still be
//  helpful to determine whether a failure occurs while connecting or while authenticating.