Customers forget to reorder consumable products like coffee, supplements, or skincare. ReOrder Ping solves this by sending a reminder email at an optimal time, based on a replenishment cycle you set per product. Each email includes a one-click reorder link that adds the product to the cart automatically. The app only contacts customers who opted into marketing, includes an unsubscribe link in every email, and cancels reminders if the customer reorders on their own.