(Go) Auto-Generate or Explicitly Specify the Message-ID Email Header

Demonstrates how to auto-generate or explicitly specify the Message-ID header field.

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    email := chilkat.NewEmail()
    var success bool

    email.SetSubject("test")
    email.SetBody("test")
    email.AddTo("Joe","joe@example1.com")
    email.SetFrom("mary@example2.com")

    mailman := chilkat.NewMailMan()

    // When the mailman sends email, it renders the email to be sent,
    // and then sends the rendered MIME.

    // Instead of actually sending the email, this example will render
    // to MIME so we can see what would be sent..

    // We can explicitly set the Message-ID like this:
    mailman.SetAutoGenMessageId(false)
    email.AddHeaderField("Message-ID","<xyz123@abc>")

    mimeStr := mailman.RenderToMime(email)
    fmt.Println(*mimeStr)

    // This is what we get:

    // MIME-Version: 1.0
    // Date: Mon, 20 Jul 2020 17:20:09 -0500
    // Message-ID: <xyz123@abc>
    // Content-Type: text/plain; charset=us-ascii; format=flowed
    // Content-Transfer-Encoding: 7bit
    // X-Priority: 3 (Normal)
    // Subject: test
    // To: Joe <joe@example1.com>
    // From: mary@example2.com
    // 
    // test

    fmt.Println("--------")

    // If we auto-generate...
    mailman.SetAutoGenMessageId(true)
    mimeStr = mailman.RenderToMime(email)
    fmt.Println(*mimeStr)

    // We get this:

    // MIME-Version: 1.0
    // Date: Mon, 20 Jul 2020 17:21:20 -0500
    // Message-ID: <04EDE096BBFE484967F6398A973B0FCF6EA09A44@CHILKATSLICE>
    // Content-Type: text/plain; charset=us-ascii; format=flowed
    // Content-Transfer-Encoding: 7bit
    // X-Priority: 3 (Normal)
    // Subject: test
    // To: Joe <joe@example1.com>
    // From: mary@example2.com
    // 
    // test

    email.DisposeEmail()
    mailman.DisposeMailMan()