https://www.aftersell.com/
Increase AOV with Shopify-native upsells, post-purchase offers, and checkout extensions. Aftersell helps brands unlock more revenue across the entire funnel.
post purchaseshopifyupsellappaftersell
https://intercom.help/aftersell/en/articles/9269388-how-to-create-a-multi-step-post-purchase-upsell
This article covers how to display more than two post-purchase upsell pages to customers.
post purchasecreatemultistepupsell