Recommendations for Smart upsell: Fully automated upsell & cross sale based on API software recommendations. Let the AI application do the upselling for you while you concentrate on your market. Upsells & packages: Create upselling, cross-selling, and promotional programs that will increase sales. You can use our predefined upsells or build your own. Popup upsells are used for slick upsells, cross-sales, gifts and related packages. The One Click product is in the cart, and the Upsell product is in the cart as well.