Get Exception details without using Try Catch block in ASP.Net MVC

Hello friends,

I need some help to catch exception using 1 common way across all controllers

In below code I used try catch block to catch exception and send mail.

But i don't want to use try catch block in all action result methods in all controllers.

Please help to solve 

        public ActionResult Contact(Useful_info usi)
        {
            try
            {
                usi.SuportTeam = db.SupportTeam.ToList();
                ViewBag.Message = "Your contact page.";
            }
            catch(Exception ex)
            {
                string result = exceptionmail.MailExceptionDetails(this.ControllerContext.RouteData.Values["controller"].ToString(), this.ControllerContext.RouteData.Values["action"].ToString(), ex.Message, new System.Diagnostics.StackTrace(ex, true));
                return View("Error");
            }
            return View(usi);
        }