Title: Improve Back-in-Stock Conversions with a “Send to Cart” Option

We'd love to see STOQ add a third destination option for back-in-stock notifications: Send to Cart, alongside Checkout and Product Page.

Currently, sending customers directly to checkout prevents them from easily reviewing product details. The Product Page option works well and automatically adds the item to their cart, but doesn't immediately present customers with their cart and checkout options.

Our proposed solution: When customers click their notification link, they're taken directly to their cart with the restocked product already added. From there, they can either click the product title to review its details or proceed straight to checkout.

This would combine the convenience of direct checkout with the flexibility of the product page, potentially reducing friction, improving customer confidence, and increasing conversions.

We've already experienced customer confusion with the current checkout option on diamondguitars.com, using Shopify's Concept theme (v6.0.3).

Giving merchants a third destination option would provide greater flexibility while creating a more intuitive purchasing experience for customers.