Remove the Plain-Text Body from an Email

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Demonstrates the Chilkat Email.RemovePlainTextAlternative method, which removes the plain-text body from the email if one exists. Other body representations, attachments, and related items remain unchanged. This example builds a message with both plain-text and HTML alternatives, then removes the plain text.

Background: This is the counterpart to RemoveHtmlAlternative. Removing the plain-text alternative leaves an HTML-only message. Note that dropping the plain-text fallback is generally discouraged for real mail — it hurts accessibility and can raise spam scores — but it is occasionally needed when a downstream system expects a single HTML representation.

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    //  Demonstrates the RemovePlainTextAlternative method, which removes the plain-text body
    //  from the email (if one exists).  Other body representations, attachments, and related
    //  items remain.

    email := chilkat.NewEmail()
    email.SetSubject("Remove plain-text alternative")

    //  Create an email with both plain-text and HTML alternatives.
    email.SetTextBody("This is the plain-text version.","text/plain")
    email.AddHtmlAlternativeBody("<html><body>This is the HTML version.</body></html>")
    fmt.Println("NumAlternatives before = ", email.NumAlternatives())
    fmt.Println("HasPlainTextBody before: ", *email.HasPlainTextBody())

    //  Remove the plain-text body, leaving the HTML alternative.
    email.RemovePlainTextAlternative()
    fmt.Println("NumAlternatives after = ", email.NumAlternatives())
    fmt.Println("HasPlainTextBody after: ", *email.HasPlainTextBody())

    email.DisposeEmail()