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Ultimate Postal Code Blocker

Prevent unwanted deliveries by blocking specific postal codes

by MSM TECHNOLOGIES · Launched: November 2024

4.5 (13) on Shopify
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Block Costly Undeliverable Postal Codes in Real Time at Checkout. On Any Store Plan.

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About Ultimate Postal Code Blocker

Stop expensive shipping mistakes before they start. Ultimate Postal Code Blocker scans the address field in real time and rejects high-cost or undeliverable postal codes—no Carrier Calculated Shipping required. Compatible with all store plans, it handles thousands of codes or more, providing real-time protection. Reduce losses, protect your brand, and navigate tough areas effortlessly.

Last verified: October 14, 2026 · Fresh

App details

Developer
MSM TECHNOLOGIES
Pricing
Paid
Launched
November 2024
Rating
4.5 (13) on Shopify

Key features

  • Stop high-cost postal codes in real-time
  • Setup in a few clicks
  • Customize your blocking message
  • Handle 1000+ codes with ease
  • Advanced Settings at your fingertips
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 13 Shopify App Store reviews

Use the arrows to read individual reviews

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— Prime Aluminum Kuwait
I’m the owner of this shop and the delivery driver, so keeping Perfumes orders local to New York matters quite a bit! Took me a while to decide where to draw the line. Setting up the app was the easy part.
— NEX BRIT™
Friday afternoons used to involve going aero bar stool deliveries and checking every new address. Most were fine,but there would usually be someone outside our Xhafzotaj delivery area.Then we’d have to contact them, explain, refund it, adjust the order numbers etc. We already had the suburbs listed on the website. People just went straight to the products and ordered,which I can understand. Having...
— Furniture City (Lahore)
For 9 PM by afnan, an address being valid isn’t enough. It has to be somewhere our carrier can reach within 5-6 dyas. We use this to exclude postcodes outside that window in United kingdom.
— Royalintirors
We had to cut back our shop’s delivery area when a driver left. Larger orders of Drink carrier go in our vans, and the remaining routes were already full. Needed to stop accepting orders from a few areas while we sorted things out. This let us do that without taking products off the website. Still using it now that we’ve settled on a smaller delivery area.
— Glow Troupe
Delivery within United States only was on the product pages, the delivery page and the cart. Still got orders for Gloss Drip Lip Gloss from outside our area. Happy to have something that actually catches the postcode before payment. The notices clearly weren’t doing much on their own.
— Swanie Store
Works perfectly. Added the United states postcodes our shoes courier doesn’t cover and tested a few addresses. All working. Easy enough to use without needing help.
— Ziyai Store
The whitelist sold me on this. Our delivery partner covers a handful of cities in USA and gave us the postcodes. Much less work to allow those than figure out how to exclude the rest of the country.
— Hub Mart
A large order of Rose Diamond Lamp, nearly two hours outside “Stamford” was what finally made us look for an app. Local delivery means our own truck, so there was no sensible way to fulfil it. Refunded the customer and installed this afterwards. Should save both sides the bother next time.
— Budget Bazaar
This app is working well for our business. We had some minor issues with the initial integration but the app owner had zero issue helping to resolve the problems.
— Quick Tub
Works perfectly, The CSV I uploaded initially contained too much information so a good tip is to only include the postal codes you need blocked and not adding the city name in a separate column as this caused the entire city to be blocked for myself. Contacted their help and received a phone call within 10 minutes as their emails weren't going through but I had managed to fix the issue myself as t...
— Royalcraft
Very easy to install. I was looking for an app that would allow me only to send to the major cities in Canada so I didn't receive unexpected remote delivery charges. The developer quickly added a whitelist option to the whole country blocking, which was a very quick and elegant solution.
— Vermilion Jewellery
No funciona. Instale la aplicacion para filtrar los codigos para que los clientes no eligieran otro metodo y no me funciono, intente 3 veces, la primera vez fue para bloquear todos los codigos diferentes a mi localidad, lo intente con 3 codigos diferentes. Agradezco totalmente que se hayan puesto en contacto, pero tampoco me parece el acoso de una forma un tanto amenazante por parte de sus agentes...
— Boca Rosa

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