Customer Retention Engine Overview Acquiring a new customer costs 5–7x more than retaining an existing one. A retention engine identifies customers who show declining engagement — reduced purchase frequency, decreasing order values, browsing without buying — and intervenes with personalized campaigns before they lapse. Klaviyo and AutomateWoo can build these workflows with no custom code using predictive analytics built into the platform. Note: For reactivating already-lapsed customers, see @win-back-reactivation. This skill focuses on proactive churn prevention before customers lapse. When t…