Upsells inside the Shopify checkout itself

The checkout is the last place to add to an order before payment — and on Shopify it is also the most tightly controlled. UpsellEngine renders offers natively inside the Shopify checkout using the official checkout editor, so they look and behave like part of the checkout rather than a bolt-on.

Because Shopify reserves checkout customization for Shopify Plus, checkout upsells are available to Plus stores and included on our Scale plan. Every other UpsellEngine placement — product page, cart, popups, post-purchase, thank-you — works on every Shopify plan, so you are never blocked from upselling elsewhere while you grow toward Plus.

Checkout offers and post-purchase offers are often confused, but they solve different problems. A checkout offer appears before payment and can lift the order the shopper is about to place; a post-purchase offer appears after payment and cannot affect the sale that just completed. Many Plus stores run both — a relevant add-on in the checkout, then a one-click offer on the confirmation step. Shopify limits a checkout to three offers, and UpsellEngine chooses which to show using the same recommendation engine and profit ranking as the rest of the journey.