A merchant can use an e-commerce platform to sell products to customers, and customers can use the e-commerce platform to return items that they are unsatisfied with back to the merchant. These product returns have an associated cost. Embodiments of the present disclosure relate to computer-implemented systems and methods to enable customer-to-customer product returns in an e-commerce platform. In a customer-to-customer return, a first customer that wants to return an item of a particular product is connected with a second customer that wants to purchase that product. The e-commerce platform then facilitates a shipment of the item from the first customer directly to the second customer. Embodiments of the present disclosure include online store implementations of customer-to-customer returns, and online marketplace implementations of customer-to-customer returns.