NoBox: PO Box Blocker

Develop by Shopify

$4.99

/ Month

7 Days Free Trial

Block PO Box addresses at checkout for error-free deliveries.

About NoBox: PO Box Blocker

Launched Jan 11, 2026

Built by Shopify

Address

114 W. 17th Street, New York, NY, 10011, US

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Description

Block PO Boxes & validate addresses at checkout. Stop failed deliveries & save shipping fees.

Secure your logistics with PO Box Blocker & Validator. Our app automatically blocks PO Box addresses at checkout to prevent delivery failures. The application sets up in seconds. Merchants can easily customize the error message shown to customers or add specific blocking rules for terms like 'pob', 'cedex', or 'packstation'.

Detect all variations including "PO Box", "P.O. Box", "POBOX", and "P.O.BOX"
Customize the error message and add specific blocking rules.
Immediately inform customers when a PO Box used
Integrates seamlessly into your checkout flow.

Top Helpful Reviews

Yabee Anime

Jan 12, 2026 on Shopify

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.