string neirong = "<table……………………s";
MailMessage mail = new MailMessage("kainengwangzhan@163.com", "public@kaineng-group.com", zhuti, neirong);
mail.IsBodyHtml = true;
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.163.com";
smtp.Credentials = new System.Net.NetworkCredential("kainengwangzhan@163.com", "");
smtp.Send(mail);