Yotpo

Yotpo is the most complete customer content and loyalty platform for eCommerce. It combines product reviews, photo and video UGC, loyalty programs, and referrals into a single platform — which matters because these features compound each other. A review from a loyalty member who was referred by a friend carries more weight than any of those signals alone.

For retention marketing specifically, the Klaviyo integration is what makes Yotpo essential. Review submission events, loyalty point balances, VIP tier status, and referral activity all flow into Klaviyo as properties and events. This means you can build flows like 'send a thank-you email when a customer leaves a 5-star review' or 'notify VIP Gold members when their favorite category has new arrivals.'

The platform has a steep learning curve and the pricing is enterprise-oriented, but for brands serious about building a retention flywheel — where reviews drive trust, loyalty drives repeat purchases, and referrals drive acquisition — Yotpo is the most integrated option available.