Checkout Defense

Checkout Defense by TraceBack Labs is a Shopify App that helps ecommerce merchants block disposable emails at checkout and signup to prevent fake orders, promo abuse, and chargebacks. The app provides a self-maintained list of 7,500+ disposable domains, refreshed weekly, allowing merchants to toggle checkpoints, add allow or block domains, and tag risky signups for review. It offers an added layer of store security, emphasizing that it is not a fraud-scoring or chargeback-prediction tool, and reminds merchants to remain responsible for order-review decisions.