public void SendNewOrderMail(int orderId)
        {
            HostingEnvironmentPolyfills.QueueBackgroundWorkItemPf(async ct =>
            {
                NewOrderEmailModel emailModel = new NewOrderEmailModel();

                OrdersProvider ordersProvider = new OrdersProvider();
                Order order = await ordersProvider.GetFullOrderData(orderId);

                string toEmailAddress;
                using (ApplicationDbContext appContext = new ApplicationDbContext())
                {
                    string userId       = order.UserId.ToString();
                    Address userAddress = await appContext.AddressInfos.FirstOrDefaultAsync(a => a.UserId == userId);

                    emailModel.Country       = userAddress.Country;
                    emailModel.City          = userAddress.City;
                    emailModel.District      = userAddress.District;
                    emailModel.PostCode      = userAddress.PostCode;
                    emailModel.Commune       = userAddress.Commune;
                    emailModel.AddresDetails = userAddress.AddresDetails;
                    emailModel.FullName      = string.Format("{0} {1} {2}", userAddress.FirstName, userAddress.MiddleName, userAddress.LastName);
                    emailModel.Phone         = userAddress.Phone;
                    toEmailAddress           = userAddress.Email;
                }

                emailModel.BaseUrl          = ConfigurationManager.AppSettings["Site.BaseUrl"];
                emailModel.ContactUsFormUrl = string.Concat(emailModel.BaseUrl, ConfigurationManager.AppSettings["Site.ContactUsFormUrl"].TrimStart('/'));
                emailModel.OrdersPageUrl    = string.Concat(emailModel.BaseUrl, ConfigurationManager.AppSettings["Site.OrdersPageUrl"].TrimStart('/'));

                emailModel.OrderNumber        = order.Id;
                emailModel.CommissionPercents = order.HasCommission ? order.CommissionPercents : 0;
                emailModel.DeliveryMerchant   = order.DeliveryMerchant;
                emailModel.ShippingPrice      = order.ShippingPrice.ToString("N2") + "лв";
                emailModel.TotalPrice         = order.TotalPrice.ToString("N2") + "лв";
                emailModel.Items = order.OrderDetails.Select(od => new Item()
                {
                    Title    = od.Article.Title,
                    Quantity = od.Quantity,
                    Price    = od.ItemPrice.ToString("N2") + "лв"
                }).ToList();

                string emailContent = templateEngine.RenderTemplate("NewOrder", emailModel);

                await this.mailSender.SendEmail(toEmailAddress, string.Format("{0}: Поръчка #{1}", emailModel.BaseUrl, emailModel.OrderNumber), emailContent);
            });
        }