public void TestMaintainanceMailService()
        {
            IMailService mailerService = new MaintainanceMailer();
            CurrencyExchangeService ces = new CurrencyExchangeService(mailerService);

            mailerService.Mail("*****@*****.**", "Help");
        }
        public int SendMaintainanceMail(string emailTo, string message)
        {
            try
            {
                IMailService ms = new MaintainanceMailer();
                ms.Mail("*****@*****.**", message);

                return 0;
            }
            catch (Exception ex)
            {

                throw ex;
            }
        }