(.NET Core C#) Example to Add Several BCC Email Recipients

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Demonstrates how to call AddBCC once per email recipient.

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Chilkat.Email email = new Chilkat.Email();
bool success;

email.Subject = "Test email subject";
email.Body = "Test email body";

email.From = "Test <joe@example.com>";

// Add a primary TO recipient
email.AddTo("Elizabeth","elizabeth@example.com");

// Add a CC recipient.
email.AddCC("Jerry","jerry@example.com");

// Add 2 BCC recipients.
email.AddBcc("Mira","mira@example.com");
email.AddBcc("Alexander","alex@example.com");

// BCC recipients will not be present in the MIME of the email that is sent.
// However, the BCC recipients are included in the recipients provided to the SMTP server
// during the SMTP protocol conversation. This will be shown below.

// First, let's look at the MIME.
Debug.WriteLine(email.GetMime());

// MIME-Version: 1.0
// Date: Sat, 30 Oct 2021 07:58:32 -0500
// Message-ID: <183D5F51163BE4374B494D2ED067DE2783CC761B@SLICE>
// Content-Type: text/plain; charset=us-ascii; format=flowed
// Content-Transfer-Encoding: 7bit
// X-Priority: 3 (Normal)
// Subject: Test email subject
// From: Test <joe@example.com>
// CKX-Bounce-Address: joe@example.com
// To: Elizabeth <elizabeth@example.com>
// Cc: Jerry <jerry@example.com>
// 
// Test email body

// Notice that the BCC recipients do not appear in the MIME.  But don't worry, they are still present within the email object.
// The difference between CC and BCC recipients is that CC recipients appear in the MIME.  Thus, the recipient of the email
// can see the CC recipients, but cannot see and is unaware of the BCC recipients.

// -- Note: You may notice the "CKX-Bounce-Address" header.  This is a header that appears in the MIME
// -- but is automatically removed when a Chilkat method to send email is called.
// -- Chilkat automatically removes all headers beginning with "CKX-" when sending email.

// ----------------------------------------------------------------------------------------------
// Let's send the above email and examine the SMTP session log to show that the BCC recipients also receive the email.

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

mailman.SmtpHost = "smtp.example.com";
mailman.SmtpUsername = "myUsername";
mailman.SmtpPassword = "myPassword";
mailman.SmtpSsl = true;
mailman.SmtpPort = 465;

success = mailman.SendEmail(email);
if (success != true) {
    Debug.WriteLine(mailman.LastErrorText);
    return;
}

success = mailman.CloseSmtpConnection();
if (success != true) {
    Debug.WriteLine("Connection to SMTP server not closed cleanly.");
}

Debug.WriteLine("Mail Sent!");

// Examine the SMTP session log.
Debug.WriteLine(mailman.SmtpSessionLog);

// Here you can see the session log and the BCC email addresses included in the "RCPT TO" commands.

// 220 smtp.example.com ESMTP Example SMTP Service
// EHLO SLICE<CRLF>
// 250-smtp.example.com
// 250-8BITMIME
// 250-AUTH PLAIN LOGIN
// 250 Ok
// AUTH LOGIN<CRLF>
// 334 VXNlcm5hbWU6
// ***<CRLF>
// 334 UGFzc3dvcmQ6
// {PasswordOrCredentials}
// 235 Authentication successful.
// MAIL FROM:<joe@example.com><CRLF>
// 250 Ok
// RCPT TO:<elizabeth@example.com><CRLF>
// 250 Ok
// RCPT TO:<jerry@example.com><CRLF>
// 250 Ok
// RCPT TO:<mira@example.com><CRLF>
// 250 Ok
// RCPT TO:<alex@example.com><CRLF>
// 250 Ok
// DATA<CRLF>
// 354 End data with <CR><LF>.<CR><LF>
// {388 bytes}
// <CRLF>.<CRLF>
// 250 Ok
// QUIT<CRLF>
// 221 Bye