Casper runs silently on every page of your store, syncing shopping carts for logged-in customers across all their devices. Cart updates are detected automatically and persistent carts stay active for 90 days, even when customers switch browsers or return later. This helps reduce abandoned cart rates and recover lost sales without pop-ups or manual actions. Perfect for stores with long buying cycles, Casper also lets you convert saved carts into draft orders, ideal for wholesale and B2B stores.