public ActionResult Index(CustomerVM model)
        {
            ResponseToken response    = new ResponseToken();
            string        sendGridKey = CoreAppSettings.SendGridApiKey;

            if (response.score == 0)
            {
                var responseString = CaptchaHelper.RecaptchaVerify((string)Session["Token"]).Result;;
                response = JsonConvert.DeserializeObject <ResponseToken>(responseString);
            }
            if (response.score < 0.5)
            {
                ModelState.AddModelError("CaptchaFail", "Captcha verification failed. Please enter again ");
            }

            if (ModelState.IsValid)
            {
                SendMail(model, sendGridKey);
                return(RedirectToAction("Thanks", "Home"));
            }

            return(View(model));
        }