private Message createMessage(String content) {

    Message message = new MimeMessage(session);
    try {
      message.setFrom(new InternetAddress(config.getUsername()));
      message.setRecipients(
          Message.RecipientType.TO, InternetAddress.parse(config.getEmailToNotificate()));
      message.setSubject(SUBJECT);
      message.setContent(content, "text/html; charset=utf-8");
    } catch (MessagingException e) {
      LOG.error("Error during message creating", e);
    }
    return message;
  }
  private void initSession() {
    Properties props = new Properties();

    props.put("mail.smtp.auth", config.isSmtpAuth());
    props.put("mail.smtp.starttls.enable", config.isSmtpStarttls());
    props.put("mail.smtp.host", config.getSmtpHost());
    props.put("mail.smtp.port", config.getSmtpPort());
    props.put("mail.smtp.ssl.trust", config.getSmtpHost());

    username = config.getUsername();

    session =
        Session.getInstance(
            props,
            new Authenticator() {
              protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, config.getPassword());
              }
            });
  }