AddressFence: PO Box Guard

Scripts retired June 30 - block PO boxes, lockers, bad...

by momiji-shop · Launched: June 2026 · Free plan available.

0.0 on Shopify Built for Shopify

Manage this app

Verify your developer profile to earn a badge and build trust for your app.

Native checkout rules only see the shipping address. AddressFence also checks billing.

Get it on Shopify →

About AddressFence: PO Box Guard

Shopify now blocks PO boxes, lockers and ZIP patterns natively, on the shipping address only. AddressFence covers what that leaves out.Billing address: block PO boxes, lockers, ZIP and region on billing - fields the built-in rules cannot target.Street number: the Address Blocker rule that was not migrated. Blocks a street line with no number in it.Plus exceptions, allowlists, exact/prefix/range/wildcard ZIP matching, a simulator, and versioned publishes with rollback. Billing-address rules - built-in checkout rules cannot target billing at all. Require a street number - the Address Blocker rule that was not migrated. Test any address in the simulator before publishing, with one-click rollback. Show more Show less

Last verified: July 22, 2026 · Fresh