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Ultimate PO Box Blocker + icon

Ultimate PO Box Blocker +

Block PO boxes at checkout. 1-click setup. Analytics + Rules.

by MSM TECHNOLOGIES · Launched: October 2023

5.0 (8) on Shopify Built for Shopify
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Block PO Boxes in real time at checkout before orders are placed. 1-click setup, product and shipping exceptions, analytics, reports and CSV export.

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About Ultimate PO Box Blocker +

Stop restricted PO Box orders in real time at checkout, before they're placed. Set up basic protection in one click. Tailor rules by product or collection, with country and shipping exceptions so eligible PO Box orders can continue. Add parcel locker, postal code and custom keyword rules. Review address activity with analytics, product and region reports, and CSV export. For eligible stores, show custom notices on restricted shipping options.

Last verified: October 26, 2026 · Fresh

App details

Developer
MSM TECHNOLOGIES
Category
Orders & shipping
Pricing
Paid
Launched
October 2023
Rating
5.0 (8) on Shopify

Key features

  • Real-time PO Box blocking at checkout
  • 1-click setup for PO Box blocking
  • Product & collection rules
  • Country & shipping exceptions
  • Analytics, reports & CSV export
Integrations with:

Checkout Shopify Admin

2 plans · 30-day free trial

Pro Monthly Plan

$8.99/month

Pro Yearly Plan

$96.99/year

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 9 Shopify App Store reviews

Use the arrows to read individual reviews

This app is very easy to set up and offers a lot of options to block shipments to PO Boxes. It has an option for blocking by product, but did not have an option for blocking by collections. When I asked Jason about this, I was amazed that in a couple of weeks he added a collections option to this app, incredible customer service!! It works perfect!
— Ridgedale Orchard & Vineyard
This app works perfectly, and it's very thorough. It blocks a wide variety of PO box entries and is fully configurable. The perfect solution to an otherwise annoying issue in Shopify. Their customer service is also very responsive and helpful. Highly recommended!!!
— Quite Cozy
Works exactly how it is supposed to. Took 5 minutes to set up and. now we have this in all our client's stores. Makes sense to use.
— Cinch Jeans
Working great! Awesome customer service.
— Ornemoi
Great support from the team!
— Good Protein
Prompt customer service and great turn-around on a custom fix for us!
— Roo & You
Incredible UI. Straight up set up and works great!
— EXO Drones
Fast and very helpful customer service. App works as expected. Thank you!
— Thistle and Spire
completely nonfunctional. could not turn on or adjust any settings. could not even send support request or feedback. useless. avoid
— Fables Diapers

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