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Block undeliverable addresses in checkout and fix typos after purchase, before the label prints.
Wrong or incomplete delivery addresses cause returns, support tickets and refunds. Zvanta Address Validator checks every order in checkout — including express and wallet checkouts — and stops undeliverable addresses before the order is placed. After purchase it verifies addresses against official postal registers, shows the customer a ready correction and can fix clear errors automatically. It never changes an address it is not sure about. Every rule ships with a recommended default.
- Blocks bad addresses in checkout, including express and wallet checkouts
- 24 rules: missing house number, postal code format, PO boxes, lockers, test data
- Checks against official postal registers for DE, AT, CH, LI and PL
- Order tags per error type, fulfillment holds and address statistics
- Buyer messages in the customer's language; panel in English, German and Polish
Languages
Polish, English, and German
Works with
Categories
Labels and packaging
Pricing
Choose the plan that best fits your business.
Free
Free
Features
- Address validation for up to 100 orders
- 24 address rules with recommended defaul
- Works with express and wallet checkouts
- Buyer messages in the customer's languag
- Country exceptions and extra alphabets
Start
$9.99 / month
or $99/year and save 17%
Features
- Everything in Free
- Order tags per error type
- Automatic fulfillment hold for flagged o
- Address statistics dashboard
7-day free trial
Pro
$24.99 / month
or $249/year and save 17%
Features
- Everything in Start
- Suggestions from official postal registe
- Did-you-mean in checkout (Shopify Plus)
- Automatic address fix after purchase
- Customer self-service address correction
7-day free trial
All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.
Reviews (1)
- 100% of ratings are 5 stars
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0% of ratings are 4 stars
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0% of ratings are 3 stars
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0% of ratings are 2 stars
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0% of ratings are 1 stars
Setup took us literally 3 minutes, and within an hour, the app had already caught its first bad address. No hassle with complicated settings — you just enable it, and it runs smoothly in the background. If you're also tired of paying for returned packages and manually fixing address typos, get it without hesitation. This app saves time and headache right from hour one!
Support
App support provided by 7KGEAR.
Resources
Launched
August 6, 2026
Data access
This app needs access to the following data to work on your store. Learn why in the developer's privacy policy .
View customer data:
Sensitive data, device and activity data
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Sensitive data
Name, phone number, physical address
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Device and activity data
Geolocation, IP address, browser and operating system
View staff and contributor data:
Store owner
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Store owner
Name, email address, phone number, physical address
View and edit store data:
Orders, Shopify Functions
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Edit orders
All order history for the last 60 days, merchant managed fulfillment
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Edit Shopify Functions
Cart and checkout validations
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