public static void SendMail()
        {
            MailMessage m = new MailMessage();
            m.From = new MailAddress("supertest22@yandex.ru");
            m.To.Add("somewhere@host.com");
            m.Subject = "Test message";
            m.Body = "<b>Hello world</b>";
            m.IsBodyHtml = true;

            SmtpClient smtp = new SmtpClient("smtp.yandex.ru", 587);
            smtp.EnableSsl = true;
            smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
            smtp.UseDefaultCredentials = false;
            smtp.Credentials = new NetworkCredential("supertest22@yandex.ru","password");
            smtp.Send(m);
        }