SmtpClient smtp = new SmtpClient("smtp.myoutlook.ru", 587);
               using (MailMessage message = new MailMessage())
               {
                   string FromAddr = "from";
                   string ToAddr = "to";
                   bool EnableSSL = false;
                   string Login = "login";
                   string Password = "pass";
                   Encoding encoding = System.Text.Encoding.GetEncoding("windows-1251");

                   message.IsBodyHtml = false;
                   message.SubjectEncoding = encoding;
                   message.BodyEncoding = encoding;
                   MessageBox.Show("From address: " + FromAddr);
                   message.From = new MailAddress(FromAddr,  encoding);
                   message.Bcc.Add(new MailAddress(ToAddr,  encoding));
                   message.Subject = "Subject";
                   message.Body = "Body";
                   smtp.UseDefaultCredentials = false;
                   smtp.EnableSsl = EnableSSL;
                   MessageBox.Show("Enable SSL is: " + EnableSSL.ToString());
                   if (!String.IsNullOrEmpty(Login) &&
                       !String.IsNullOrEmpty(Password))
                   {
                       MessageBox.Show("Login is " + Login);
                       smtp.Credentials = new System.Net.NetworkCredential(Login, Password);

                   }
                   smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                   smtp.Send(message);