code: private void setTexts(final Email email, final MimeMultipart multipartAlternativeMessages)
  			throws MessagingException {
  		if (email.getText() != null) {
  			final MimeBodyPart messagePart = new MimeBodyPart();
  			messagePart.setText(email.getText(), "UTF-8");
  			multipartAlternativeMessages.addBodyPart(messagePart);
  		}
  		if (email.getTextHTML() != null) {
  			final MimeBodyPart messagePartHTML = new MimeBodyPart();
  			messagePartHTML.setContent(email.getTextHTML(), "text/html; charset=\"UTF-8\"");
  			multipartAlternativeMessages.addBodyPart(messagePartHTML);
  		}
  	}
docs: Fills the {@link Message} instance with the content bodies (text and html).
  
  @param email The message in which the content is defined.
  @param multipartAlternativeMessages See {@link MimeMultipart#addBodyPart(BodyPart)}
  @throws MessagingException See {@link BodyPart#setText(String)}, {@link BodyPart#setContent(Object, String)} and
  {@link MimeMultipart#addBodyPart(BodyPart)}.