PO Box Blocker Pro

Blocks PO Box addresses at checkout to reduce shipping errors.

by Dev Kit · Launched: July 2025

1.0 (1) on Shopify

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Block PO boxes, lockers & undeliverable addresses at checkout

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About PO Box Blocker Pro

PO Box Blocker Pro checks each shipping address at checkout and blocks addresses you can't deliver to before the order is placed. Block PO boxes, parcel lockers, locked bags, private bags and APO/FPO addresses, or restrict delivery by country, state, city or postal code. Allow chosen products, variants or collections to bypass the rules, set a custom checkout message, and test any address before going live. Works on standard checkout and Shop Pay across all Shopify plans. No theme edits needed. Block PO boxes, parcel lockers, locked/private bags & APO/FPO addresses Restrict delivery by country, state, region, county or postal code Allow chosen products, variants or collections to bypass any rule Set a custom checkout message that helps shoppers fix their address Test any address in the built-in tester before you go live Show more Show less

Last verified: July 17, 2026 · Fresh