AddressFence: PO Box Guard

Scripts retired June 30. Rebuild PO Box, locker, and ZIP rules as checkout validation.

Shopify Scripts retired June 30, 2026. AddressFence replaces address-blocking Scripts with checkout-native validation - no theme code. Blocks PO Box, APO/FPO/DPO, and parcel lockers (Amazon Locker, Packstation, Japan pickup counters). ZIP/postal rules: exact, prefix, range, wildcard, plus region rules and exceptions. Test addresses in the simulator before publishing. Every publish is versioned for one-click rollback. Fails closed: unreadable rules block checkout instead of skipping validation.

• Blocks PO Box, APO/FPO/DPO, and parcel lockers - incl. Japan pickup counters.
• ZIP/postal rules by country: exact, prefix, range, or wildcard matching.
• Test any address in the built-in simulator before you publish a single change.