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CartShield: Checkout Rules logo

CartShield: Checkout Rules

Free plan

Protect margins and stop courier penalties with server-side checkout validation. Block PO Boxes, enforce wholesale multiples, and prevent sample kit abuse.

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| Marketing and conversion | Launched Nov 2026
Admin telemetry dashboard showing active checkout rulesShopify checkout outlining PO Box delivery address in redCheckout alert blocking standalone discounted sample kitAdmin telemetry dashboard showing active checkout rulesShopify checkout outlining PO Box delivery address in redCheckout alert blocking standalone discounted sample kit
Categories: Order limit apps Shipping solutions - Other

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