Ultimate PO Box Blocker +

Name: Ultimate PO Box Blocker +
Brand: MSM TECHNOLOGIES
Rating: 5.0 (8 reviews)

Pricing: From $8.99/month. Free trial available.
Rating: 5.0 (8)
Developer: MSM TECHNOLOGIES

Install

View demo store

Real-time PO Box blocking at checkout with 1-click setup

Block PO Boxes in real time at checkout with 1-click setup. Add product and shipping exceptions.

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.

Block restricted PO Box orders in real time at checkout. Set up in one click.
Set PO Box rules by product or collection, with country and shipping exceptions.
Analyze address activity by product and region. Export reports to CSV.
Block parcel lockers and Australian LPOs; allow APO/FPO/DPO PO Boxes.
Show custom notices on restricted shipping options for eligible stores.

Languages

English

Works with

Checkout
Shopify Admin

Pricing

Choose the plan that best fits your business.

Pro Monthly Plan

$8.99 / month

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
Parcel lockers, LPOs & APO/FPO/DPO rules
Postal code & custom keyword rules
Shipping notices (eligible stores)

30-day free trial

Pro Yearly Plan

$96.99 / year

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
Parcel lockers, LPOs & APO/FPO/DPO rules
Postal code & custom keyword rules
Shipping notices (eligible stores)

30-day free trial

All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.

Reviews (8)

Overall rating

Counts per rating level

100% of ratings are 5 stars
8
0% of ratings are 4 stars
0% of ratings are 3 stars
0% of ratings are 2 stars
0% of ratings are 1 stars

All reviews

December 1, 2025

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

United States

5 days using the app

MSM TECHNOLOGIES replied December 2, 2025

Glad to be of service! Thank you for your trust in us.

October 17, 2025

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

United States

29 days using the app

MSM TECHNOLOGIES replied October 25, 2025

Thank you for the detailed review! Happy to hear that everything is working smoothly for you guys.

December 5, 2024

Prompt customer service and great turn-around on a custom fix for us!

Roo & You

Canada

24 days using the app

MSM TECHNOLOGIES replied January 9, 2025

Thank you for letting us know about your issues. We're glad we could provide a solution!

Support

App support provided by MSM TECHNOLOGIES.

Resources

Developer

MSM TECHNOLOGIES

Website

1915 rue Poupart, Montreal, QC, H2K3H1, CA

Launched

October 10, 2023

Data access

This app needs access to the following data to work on your store. Learn why in the developer's privacy policy .

View customer data:

Sensitive data, device and activity data

Sensitive data

Name, email address, phone number, physical address
Device and activity data

Geolocation, IP address, browser and operating system, browsing behavior, client ID cookie