code: function config_mail_box(config) {
  
      imap = new Imap({
          user:config.user,
          password:config.password,
          host:config.host,
          port:config.port,
          secure:config.secure
      });
  }
docs: Configs imap account from which must fetch the twitter e-mails
  @param config object containing information of imap account (user, password, host, port, secure boolean flag)