Load an Email from MIME in a StringBuilder

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Demonstrates the Chilkat Email.SetFromMimeSb method, which loads an email from the MIME text stored in a StringBuilder object. On success, it replaces the entire current email. This example serializes one email into a StringBuilder with GetMimeSb, then reconstructs it in a second object.

Background: This is the StringBuilder counterpart to SetFromMimeText. When the MIME already lives in a StringBuilder — perhaps assembled or edited there — passing it directly avoids converting to an intermediate string, which is more efficient for large messages.

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    success := false

    //  Demonstrates the SetFromMimeSb method, which loads an email from MIME text stored in a
    //  StringBuilder object.  On success, it replaces the entire current email.

    //  Build a source email and get its MIME into a StringBuilder.
    source := chilkat.NewEmail()
    source.SetSubject("Source message")
    source.SetFrom("alice@example.com")
    source.SetBody("Hello from a StringBuilder.")
    sbMime := chilkat.NewStringBuilder()
    source.GetMimeSb(sbMime)

    //  Load a new email object from the StringBuilder MIME.
    email := chilkat.NewEmail()

    success = email.SetFromMimeSb(sbMime)
    if success == false {
        fmt.Println(email.LastErrorText())
        source.DisposeEmail()
        sbMime.DisposeStringBuilder()
        email.DisposeEmail()
        return
    }

    fmt.Println("Loaded subject: ", email.Subject())

    source.DisposeEmail()
    sbMime.DisposeStringBuilder()
    email.DisposeEmail()