Wenn ich mit javamail api Nachrichten von meiner Yahoo-Adresse sende, werden diese nicht in den gesendeten Ordner verschoben. Was ist das Problem? Hier ist mein Quellcode:

public void doSendYahooMail(){
    from = txtFrom.getText();
    password= new String(txtPassword.getPassword());
    to = txtTo.getText();
    subject = txtSubject.getText();
    email_body = jTextArea1.getText();

    Properties props = new Properties();
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.host", "smtp.mail.yahoo.com");
    props.put("mail.smtp.port", "465");
    props.put("mail.smtp.socketFactory.port", "465");
    props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

    Session session = Session.getInstance(props,
            new javax.mail.Authenticator(){
                @Override
                protected PasswordAuthentication getPasswordAuthentication(){
                    return new PasswordAuthentication(from, password);
                }
    }
    );
    try {
        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
        message.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
        message.setSubject(subject);
        message.setText(email_body);
        Transport.send(message);

        JOptionPane.showMessageDialog(this, "Message Sent!","Sent",JOptionPane.INFORMATION_MESSAGE);

    } catch (Exception e) {
        JOptionPane.showMessageDialog(this, e.toString());
    }
}

Welche Änderungen muss ich vornehmen