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Checkout Address Validator
- by Schwan I/O
- $4.99/month. Free trial available.
- by Schwan I/O
- $4.99/month. Free trial available.
Prevent failed deliveries by blocking checkout when addresses are missing postal codes or house numbers, including express wallets like Shop Pay and Apple Pay.
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About the Checkout Address Validator
This app blocks checkout when addresses are missing critical details like house numbers or postal codes, preventing failed deliveries. Express wallets such as Shop Pay, PayPal, Apple Pay, and Google Pay often skip your address form, causing orders to arrive incomplete. While Shopify normally shows just a warning for missing house numbers that buyers can ignore, this validator turns it into a hard block until the address is fixed.
Set validation rules per country with postal code requirements prefilled. P.O. boxes, packstations, and pickup points are never blocked. Buyer messages display in 33 languages and can be customized for each store language you support.
Launched: August 17, 2026
Key features
- Blocks checkout when a postal code or house number is missing
- Validates express wallet checkouts: Shop Pay, PayPal, Apple Pay, Google Pay
- Every country you ship to, with Shopify's postal-code rule prefilled
- P.O. boxes, packstations and pickup points are never blocked
- Buyer messages in 33 languages, editable for every store language
Integrations with:
- Checkout,
- Shopify Admin
Category:
Pricing of Checkout Address Validator
Standard
$4.99 / month
or $49.99/year and save 17%
- Block orders missing a house number
- Require a postal code per country
- Works on Shop Pay, PayPal & Apple Pay
- Buyer messages in every store language
- Custom house-number rule per country
