private async void T_Elapsed(object sender, ElapsedEventArgs e)
        {
            (sender as Timer).Stop();
            var value = await bll.Action().ListAsync();

            Console.WriteLine(String.Format("{0} Adet Mail Gönderilecek!", value.Count));
            foreach (var item in value)
            {
                smtp.AddMail("HRP_ARBIS-2019", item.Message);
                var result = await smtp.SendAsync(item.email);
            }
            (sender as Timer).Start();
        }