Integrate with the 3rd party checkouts

Upsell Funnel Engine uses Shopify draft orders by default to create discounts for products (Other discounts apply methods supported are Discount Code and No Discount)

We are exploring new methods for Upsell Funnel Engine to be integrated into third-party checkouts.

The proposed methods are:

1. Sharing discount code

2. Sharing checkout line-item data

Updated on: 02/04/2026