Address Guard checks delivery addresses and phone numbers in checkout and after the order. Rules run inside Shopify and block clearly wrong input such as PO boxes, junk text, blocked regions and invalid phones. Reference data covers Central and Eastern Europe and Ukraine. It works next to Shopify's own validation. Addresses and phones are checked and never stored.

• Checkout rules that run inside Shopify and block clearly wrong input
• Blocked countries, regions and postcode ranges
• PO box, junk and test-input detection in many languages
• Phone checks: required, valid for the country, mobile-only option
• Postcode and city suggestions with one-click fixes at Plus checkout