Some buyers take more than they bring in: serial refunders, chargeback abusers, throwaway email domains, regions you no longer ship to. OrderGate checks every checkout against your rules and turns those buyers away before an order exists. Nothing to cancel, refund, or restock. Block by exact email, wildcard, whole domain with subdomains, country, city, postal prefix, or customer tag. Start in log-only mode to see what your rules would have stopped, then enforce when you are ready.

• Blocks inside checkout validation, so the order is never created at all
• Rules for email, wildcard, domain and subdomains, country, city, ZIP, tag
• Log-only mode reports what your rules would have blocked before you enforce
• Your own rejection wording, shown against the checkout field that caused it
• Up to 1,500 rules, measured at full load against Shopify's runtime budget