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Shopify rating
4.5 ★
13 reviews
Pricing
Free trial available
Pro Monthly Plan
$8.99/month
30-day free trial
  • • 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
Pro Yearly Plan
$96.99/year
30-day free trial
  • • 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
What does Ultimate Postal Code Blocker do?

Stop expensive shipping mistakes before they start. Ultimate Postal Code Blocker scans the address field in real time and rejects high-cost or unde...

  • 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.

Features

Checkout - Other
Review history
Daily review count on the Shopify App Store
13+10 · 29d~0.3/day· Rating 5.0★ → 4.5★

Daily tracking from Aug 10, 2026 through today · 29 days observed · sign up free for the full history →

Category rankings
Live organic position on Shopify App Store category pages
  • Checkout - Other
    #34▲17

Tracked daily · last 14 days · as of 2026-10-02

Catalog position
Within Checkout - Other on the App Store
Rank by reviews
#31 of 259
Review percentile
88th
Rating percentile
65th
On the App Store
1.9 yrs
Works with
Integrations listed for Ultimate Postal Code Blocker
CheckoutShopify Admin
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Frequently asked questions

Stop expensive shipping mistakes before they start. Ultimate Postal Code Blocker scans the address field in real time and rejects high-cost or unde... It's a checkout - other tool for ecommerce stores.