public ActionResult Contact(ContactViewModel contactVM)
        {
            if (!ModelState.IsValid)
            {
                return View(contactVM);
            }

            var contact = new Contact
            {
                Mail = contactVM.Mail,
                Name = contactVM.Name,
                Company = contactVM.Company,
                PromoCode = contactVM.PromoCode
            };

            new Email().Send(contact);

            return RedirectToAction("ContactConfirm");
        }