Ultimate PO Box Blocker

Ultimate PO Box Blocker

Pricing
From $8.99/month. Free trial available.
Highlights
Use directly in Shopify admin
Rating
5.0 (7)

Stop PO Box orders at checkout for successful deliveries and lower shipping cost. 1-click setup.

If you're a merchant tired of dealing with lost packages, failed deliveries, or the extra costs associated with reshipping, then Ultimate PO Box Blocker is for you. Whether you're a small business owner or run a large e-commerce operation, our app is designed to make your shipping process more efficient and reliable. The app needs no manual setup for seamless integration but offers advanced customization options. Take control of your shipping process today.

If you're a merchant tired of dealing with lost packages, failed deliveries, or the extra costs associated with reshipping, then Ultimate PO Box Blocker is for you. Whether you're a small business owner or run a large e-commerce operation, our app is designed to make your shipping process more efficient and reliable. The app needs no manual setup for seamless integration but offers advanced customization options. Take control of your shipping process today. more
  • Auto-block PO Boxes carriers like FedEx, UPS, DHL can't deliver to.
  • Eliminate time, effort, cost resolving address issues after purchase.
  • Real-time validation flags undeliverable addresses during checkout.
  • Simple installation with seamless integration—no setup needed.
  • Advanced options to customize settings for specific shipping needs.
Highlights
Use directly in Shopify admin

Languages

English

Works with

Pricing

Pro Monthly Plan

$8.99 / month

  • Block PO Box orders in real-time
  • Setup in 1 click
  • Customize your PO Box message
  • Integrate Seamlessly with Shopify
  • Advanced Settings at your fingertips
  • Anytime Support

30-day free trial

Pro Yearly Plan

$96.99 / year

  • Block PO Box orders in real-time
  • Setup in 1 click
  • Customize your PO Box message
  • Integrate Seamlessly with Shopify
  • Advanced Settings at your fingertips
  • Anytime Support
  • Save 10% by paying yearly

30-day free trial

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

Reviews (7)

Overall rating
5
Counts per rating level
  • 100% of ratings are 5 stars
  • 0% of ratings are 4 stars
  • 0% of ratings are 3 stars
  • 0% of ratings are 2 stars
  • 0% of ratings are 1 stars
November 24, 2025

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
United States
About 1 month using the app
MSM TECHNOLOGIES replied November 25, 2025

Thanks for the comprehensive review and for your trust in us!

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.

Support

App support provided by MSM TECHNOLOGIES.

Developer

MSM TECHNOLOGIES

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 personal data:

Customers, store owner

  • Customers

    Name, email address, phone number, physical address, geolocation, IP address, browser and operating system

  • Store owner

    Name, email address, phone number, physical address

View and edit store data:

Products, orders, Shopify Functions

  • View products

    Products or collections

  • View orders

    Shipping information

  • Edit Shopify Functions

    Access for delivery customizations

  • Edit other data

    Locales or translations

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