Address rules app comparison
AddressFence vs HBN: Address Rules — billing rules vs delivery-address policies
Direct answer. For a shipping PO box only, native Checkout Blocks address format validation is available to all merchants and can block that address type. Choose HBN: Address Rules when you need delivery-address policies for PO boxes, destinations, postal rules, and product targeting with customer messages. Choose AddressFence for checkout address rules: Free blocks PO Boxes and parcel lockers on the shipping address at checkout, plus a small set of ZIP rules. Street-number checks and billing-address rules are on a paid plan. The simulator and one-click rollback apply before you publish.
Fair comparison of PO Box Blocker — AddressFence and HBN: Address Rules. Native Checkout Blocks can already block a PO box on shipping (17 June 2026 changelog; Help). Same comparison tone as PO box blocker apps: billing vs shipping.
Free check first: PO box and street number address checker runs in your browser and sends nothing. Paste addresses and see which look like a PO box or lack a street number.
What each app mentioned
“not mentioned” means that topic was absent — not a claim about an unpublished feature. Sources: HBN: Address Rules · PO Box Blocker — AddressFence.
| Topic | HBN: Address Rules | PO Box Blocker — AddressFence |
|---|---|---|
| Address surface named | mentioned — block unsupported delivery addresses at checkout | mentioned — billing-address rules (Shopify’s built-in, no-code checkout settings cannot target billing; a Cart and Checkout Validation function can) |
| PO Box / related blocks | mentioned — block PO boxes and custom address text | mentioned — billing PO boxes and street number |
| Street-number requirement | not mentioned | mentioned — require a street number so incomplete addresses are caught at checkout |
| Geo / catalog targeting | mentioned — countries, regions, cities, postal codes, prefixes, ranges; target products, variants, collections; exceptions | mentioned — messages and regions |
| Simulator / preview before publish | mentioned — preview one address and product | mentioned — test any address in the simulator before publishing, with one-click rollback |
| Customer checkout messages | mentioned — policy priorities and customer-message translations | mentioned — messages |
How to choose
If you only need a shipping PO box block, native Checkout Blocks address format validation covers that job for all merchants. If you need delivery-address policies across PO boxes, destinations, postal rules, and product targeting with customer messages, HBN: Address Rules fits that job. If you need billing-address rules and street-number checks that Shopify’s built-in, no-code checkout settings cannot apply (a Cart and Checkout Validation function can), with a simulator and one-click rollback, AddressFence fits that job.
What this comparison is not
- Not a fraud, AVS, or chargeback guarantee.
- Not a claim that either app verifies that a street exists.
- Not a claim that you need an app to block a shipping PO box. Native Checkout Blocks can do that job.
Related pages
- PO box blocker for the billing address
- Built-in, no-code checkout settings cannot target billing
- Address simulator before publish
- PO box blocker apps: billing vs shipping
- Require a street number at checkout
- PO Box Blocker — AddressFence
Not legal advice. Not a fraud or chargeback guarantee. Native Checkout Blocks can block a shipping PO box; Free on AddressFence blocks shipping PO Boxes and parcel lockers, plus a small set of ZIP rules. Billing-address rules and a street-number check are on a paid plan, with a simulator and one-click rollback. Sources: Shopify Changelog · Help: address format validation · AddressFence on the App Store · HBN: Address Rules.