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