private void btn_Click(object sender, RoutedEventArgs e)
        {

            Unit unit = new Unit("*****@*****.**");
            unit.UnitMsg += Unit_UnitMsg;
            unit.Registration();
            


            //using (var reader = new StreamReader(Directory.GetCurrentDirectory() + @"\Emails\bad.txt"))
            //{
            //    string str = string.Empty;
            //    while ((str = reader.ReadLine()) != null)
            //    {
            //        if (!emails.Contains(str))
            //            emails.Add(str); 
            //    }
            //}

            //Start();
        }