Ultimate Postal Code Blocker

Name: Ultimate Postal Code Blocker
Brand: MSM TECHNOLOGIES
Rating: 4.5 (13 reviews)

Pricing: From $8.99/month. Free trial available.
Rating: 4.5 (13)
Developer: MSM TECHNOLOGIES

Install

Block Costly Undeliverable Postal Codes in Real Time at Checkout. On Any Store Plan.

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.

Auto-block undeliverable postal codes at checkout.
Eliminate time, effort, and costs resolving address issues after purchase.
Works on all Store plans. No Carrier Shipping needed.
Simple installation with seamless integration—minimal setup needed.
Block thousands of codes or more.

Languages

English

Works with

Checkout
Shopify Admin

Pricing

Choose the plan that best fits your business.

Pro Monthly Plan

$8.99 / month

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
Integrate Seamlessly with Shopify
Anytime Support

30-day free trial

Pro Yearly Plan

$96.99 / year

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
Integrate Seamlessly with Shopify
Anytime Support
Save 10% yearly

30-day free trial

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

Reviews (13)

Overall rating

4.5

Counts per rating level

92% of ratings are 5 stars
12
0% of ratings are 4 stars
0% of ratings are 3 stars
0% of ratings are 2 stars
8% of ratings are 1 stars
1

All reviews

September 25, 2026

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 the postcode checked at checkout fits much better with how people actually shop

Furniture City (Lahore)

Albania

3 days using the app

September 22, 2026

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

United States

3 days using the app

September 18, 2026

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

United States

3 days using the app