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Stop paying expensive carrier return fees for undeliverable addresses.
Protect your shipping margins with reliable, global PO Box blocking. Built natively into Shopify Checkout, it physically blocks checkout completion for restricted addresses—ensuring 100% reliability. Why offer a generous free tier? Built by a veteran cloud architect, our highly efficient infrastructure keeps costs low, and we love helping new stores get off the ground. Grow with us for free, and upgrade to Pro as your volume increases or when you need granular, custom shipping rules.
Key Features
- Block PO Boxes and lockers worldwide to stop failed deliveries.
- Secure checkout blocking that buyers cannot bypass or work around.
- Test your blocking rules safely using the built-in address simulator.
- Pro: Create custom error messages to match your brand and local languages.
- Pro: Set specific exception rules for shipping methods, regions, or products.
Best alternatives to modlet: Block PO Box & Lockers
modlet: Block PO Box & Lockers FAQs
Yes! Try modlet: Block PO Box & Lockers free plan. For more details about modlet: Block PO Box & Lockers pricing, check here.