Shopify app
EmergingBuilt for ShopifyUltimate PO Box Blocker +
Block PO boxes at checkout. 1-click setup. Analytics + Rules.
- Rating on Shopify
- 5.0(8)
- Reviews
- 8
- Developer
- MSM TECHNOLOGIES
- Launched
- October 10, 2023
- Pricing
- From $8.99/month. Free trial available.
- Languages
- English
The facts
Every value below is read from the listing or computed by the published formula. Nothing is a verdict.
Bayesian rating
4.48
category median 4.25
Reviews in the last 180 days
0
from the 3 reviews on the listing page
1 and 2 star share
0%
0 of 8
Starting price
$8.99/month
band: Under $10 · 30-day trial
Pricing plans as listed on Shopify
All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.
| Plan | Price | Billed yearly | Trial | Usage fee | Included |
|---|---|---|---|---|---|
| Pro Monthly Plan | $8.99/month | not offered | 30 days | none stated | 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) |
| Pro Yearly Plan | $96.99/year | not offered | 30 days | none stated | 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) |
Rating distribution
8 ratings on the listing when last refreshed.
- 5 stars8(100%)
- 4 stars0(0%)
- 3 stars0(0%)
- 2 stars0(0%)
- 1 star0(0%)
Latest reviews
The 3 most recent of 3 on-page reviews, quoted to at most 25 words each. Full reviews are on the Shopify listing.
5 starsDec 1, 2025Ridgedale Orchard & VineyardUnited States5 days using the app
"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 ..."
Developer replied. Read on Shopify
5 starsOct 17, 2025Cinch JeansUnited States29 days using the app
"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 ..."
Developer replied. Read on Shopify
5 starsDec 5, 2024Roo & YouCanada24 days using the app
"Prompt customer service and great turn-around on a custom fix for us!"
Developer replied. Read on Shopify
Features Shopify lists for this app
Feature handles from the listing, grouped as Shopify groups them.
Rate calculation
- Flat fee
- Carrier-based
- Customer-based
- Dimension-based
- Distance-based
- Product-based
- Quantity-based
- Weight-based
- ZIP/post code
- Rate blending
- Multi-zone
- Multi-origin
Customization
- Custom notifications
- PO Box restrictions
- Order limits
- Address validation
- Rename options
- Hide rates
- Reorder rates
- Geolocation
- Multi-language
- Custom rules
Works with
Third-party integrations link to their hub when 5 or more apps name them. Shopify's own surfaces are listed separately and never counted as integrations.
Shopify surfaces: Checkout, Shopify Admin
Data access
As disclosed on the listing. Never scored.
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
View staff and contributor data
Store owner
- Store owner: Name, email address, phone number, physical address
View and edit store data
Customers, products, orders, store analytics, Shopify Functions
- View customers: Browsing behavior
- View products: Products, collections
- View orders: Shipping information
- Edit store analytics: Web pixels
- Edit Shopify Functions: Delivery customizations, cart and checkout validations
- Edit other data: Locales, Shopify Markets settings, translations
Developer
MSM TECHNOLOGIES
- Apps in the dataset:
- 5
- Address:
- 1915 rue Poupart, Montreal, QC, H2K3H1, CA
- Website:
- msmtech.ca
- Support email domain:
- msmtech.ca
- English support:
- yes
- Resources:
- Privacy policy, demo store
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From the Shopify listingDeveloper claims, shown verbatim and collapsed. 85 words.Show
- 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.
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.
Questions and comments
Questions people ask about Ultimate PO Box Blocker +, answered from what this page shows. Entries marked Site editor are written by the EcomAppReviews editor. Reader comments appear after a person has read and approved them, usually within a day. E-mail addresses are never published.
Last updated Oct 23, 2026. Ratings and review counts are the values shown on each app's public listing. How the numbers are computed: methodology.
8 reviews counted on the listing. Rating and count in the structured data are the values Shopify displayed when the listing was last refreshed.