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Block PO Box addresses at checkout – Plus stores only – or warn customers before checkout
PO Box Blocker Pro automatically detects and blocks PO Box addresses during checkout, helping merchants avoid failed deliveries, shipping delays, and costly fulfillment errors. The app is easy to set up and ensures customers provide a valid street address, improving shipping reliability and reducing manual address verification work for store owners.
Key Features
- Detects and blocks PO Box addresses at checkout (Shopify Plus only).
- Allows merchants to exempt specific products from PO Box blocking.
- Customize the message shown when customers enter a PO Box address.
- Works seamlessly with Shopify Checkout and doesn’t require any theme edits.
- Toggle PO Box blocking on or off at any time with a single click.
PO Box Blocker Pro FAQs
No. PO Box Blocker Pro pricing starts at $2.99. For more details about PO Box Blocker Pro pricing, check here.

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Whether you need more information on how LetsMetrix can help enhance your Shopify experience, or require technical support, don't hesitate to contact us. We're available 24/7 via email, phone, or live chat to ensure you have all the assistance you need.
