NoBox: PO Box Blocker

Prevent failed deliveries by blocking PO Boxes at checkout.

by Wezy · Launched: January 2026

0.0 (2) on Shopify Built for Shopify

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Block PO Boxes, ZIP codes, cities, states & military addresses at checkout. Stop failed deliveries.

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About NoBox: PO Box Blocker

NoBox prevents failed deliveries by blocking orders with PO Box addresses at checkout. It detects all common PO Box formats in both address fields and lets merchants add their own custom blocking keywords. The app also blocks restricted ZIP codes, postal code ranges, cities, states, countries, and military addresses. For international merchants, it detects PO Box equivalents in six languages. Specific products or variants can be exempted from all blocking rules. Error messages are customizable. Detect all variations including "PO Box", "P.O. Box", "POBOX", and "P.O.BOX" Fully customizable error messages and keywords Block ZIP codes, cities, states, countries, products, collections & variants Product & variant exemptions from blocking rules International PO Box keywords in 6 languages Show more Show less

Last verified: July 20, 2026 · Fresh

App details

Developer: Wezy
Category: Marketing & conversion
Pricing: Paid
Launched: January 2026
Rating: 0.0 (2) on Shopify

Key features

Block PO Boxes instantly
Fully customizable messages
Customize Blocking keywords
Seamless checkout integration
Premium support

Integrations with:

Checkout

2 plans · 7-day free trial

Unlimited Plan

$4.99/month

Pro plan

$9.99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 3 Shopify App Store reviews

Use the arrows to read individual reviews

We ship heavy items often PO boxes are refused. It was a nightmare having to email customers constantly to ask for a real address before fulfilling the order. Tried another app before but it was too complicated. This one just sits in the checkout and stops them from paying if they type 'PO box'. The dashboard is pretty basic, but honestly you only need to set it up once. Does the job perfectly.

— Sydney Padel Club

Kept getting hit with return fees because people were sneaking PO Boxes into the second address line. Installed Wezy, added a couple of variations like "P.O. Box" to the block list, and haven't had an issue since.Took literally a minute. Worth the few bucks a month to save my team the manual work.

— Surprise Scoop

Honestly a life saver. We had issues with customers shipping to PO boxes via FedEx and getting returns. This app blocked them instantly. Setup took 2 minutes. I also like that we can block specific keywords like 'Parcel Locker'. Highly recommend for the price.

— Yabee Anime

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