Best Squarespace Plugins to Increase Sales in 2026
Squarespace is an excellent platform for building a store, but it does not include everything you need to maximise revenue. The features that actively help you recover lost sales, increase order value, and understand customer behavior all require plugins.
WishlistFlow: Recover Pre-Checkout Sales and Increase Revenue
WishlistFlow addresses one of the most common and least visible revenue leaks in Squarespace stores: customers who browse, find products they want, and leave without buying because they are not ready yet.
It adds a complete wishlist and save-for-later system to Squarespace 7.1 stores. Customers can save products with one click, access their wishlist from any device using just their email, and share their wishlist via WhatsApp or a direct link. Store owners get a live dashboard showing customer emails and saved products, and upcoming features include wishlist reminders and price drop alerts.
WishlistFlow is the right plugin if you want to recover the sales you are losing before customers reach checkout. Starter plans from $9 per month with a 14-day free trial.
UpsellGrow: Increase Order Value at Checkout
UpsellGrow addresses a different revenue opportunity: customers who are already buying from you, but could be buying more. It adds upsells and cross-sells to your Squarespace store, presenting customers with complementary or upgraded products at the point of purchase. This increases average order value without requiring more traffic or more customers.
UpsellGrow is the right plugin if your conversion rate is reasonable but your average order value is lower than you would like. It works at the checkout stage, which is complementary to WishlistFlow's pre-checkout stage.
Using Both Together
WishlistFlow and UpsellGrow address different parts of the revenue funnel. Together, they cover two of the three main revenue growth levers: increasing the number of purchases and increasing the value of each purchase. The third lever, increasing traffic, requires separate investment in SEO or advertising.
Frequently Asked Questions
Do I need both plugins?
Not necessarily. If customers browse but do not buy, start with WishlistFlow. If customers are buying but not spending as much as you would like, start with UpsellGrow. If both problems exist, both plugins are worth running simultaneously since they operate at different stages of the funnel.
Will these work with my existing Squarespace 7.1 store?
Yes. Both WishlistFlow and UpsellGrow are built for Squarespace 7.1 and integrate with your existing store and checkout without requiring redesigns or code changes.