public ActionResult ConfirmEmail(string token, string email)
 {
     if (!provider.ConfirmEmail(id: Int32.Parse(token), email: email))
     {
         return(RedirectToAction("Index", "Home", new { Email = email }));
     }
     else
     {
         return(RedirectToAction("Index", "Home", new { Email = "" }));
     }
 }