code: private Message prepareMessage(final Email email, final MimeMultipart multipartRoot)
  			throws MessagingException, UnsupportedEncodingException {
  		final Message message = new MimeMessage(session);
  		message.setSubject(email.getSubject());
  		message.setFrom(new InternetAddress(email.getFromRecipient().getAddress(), email.getFromRecipient().getName()));
  		message.setContent(multipartRoot);
  		message.setSentDate(new Date());
  		return message;
  	}
docs: Creates a new {@link MimeMessage} instance and prepares it in the email structure, so that it can be filled and send.
  
  @param email The email message from which the subject and From-address are extracted.
  @param multipartRoot The root of the email which holds everything (filled with some email data).
  @return Een geprepareerde {@link Message} instantie, klaar om gevuld en verzonden te worden.
  @throws MessagingException Kan gegooid worden als het message niet goed behandelt wordt.
  @throws UnsupportedEncodingException Zie {@link InternetAddress#InternetAddress(String, String)}.