Swift

Example to Add Several BCC Email Recipients

See more Email Object Examples

Demonstrates how to call AddBCC once per email recipient. Swift

func chilkatTest() {
    var success: Bool = false

    let email = CkoEmail()!

    email.subject = "Test email subject"
    email.body = "Test email body"

    email.from = "Test <joe@example.com>"

    // Add a primary TO recipient
    email.add(to: "Elizabeth", emailAddress: "elizabeth@example.com")

    // Add a CC recipient.
    email.addCC(friendlyName: "Jerry", emailAddress: "jerry@example.com")

    // Add 2 BCC recipients.
    email.addBcc(friendlyName: "Mira", emailAddress: "mira@example.com")
    email.addBcc(friendlyName: "Alexander", emailAddress: "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.
    print("\(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>
    // 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.

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

    let mailman = CkoMailMan()!

    mailman.smtpHost = "smtp.example.com"
    mailman.smtpUsername = "myUsername"
    mailman.smtpPassword = "myPassword"
    mailman.smtpSsl = true
    mailman.smtpPort = 465

    success = mailman.sendEmail(email: email)
    if success != true {
        print("\(mailman.lastErrorText!)")
        return
    }

    success = mailman.closeSmtpConnection()
    if success != true {
        print("Connection to SMTP server not closed cleanly.")
    }

    print("Mail Sent!")

    // Examine the SMTP session log.
    print("\(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

}