Shopify tracks the discount codes that succeed — never the ones that fail. Discount Leak Monitor listens at checkout and captures every code a shopper types that doesn't exist, has expired, or won't apply to their cart. See which codes fail, how often, and the cart value at stake. It groups likely typos (SUMMER2O → SUMMER20) so you recover lost demand, and emails you when a code you rely on starts failing. Read-only and privacy-first — it never edits your live discounts or stores customer data.

• Capture failed discount codes at checkout that Shopify never reports to you
• Rank every failing code by attempts, last seen, and cart value at risk
• Group likely typos into one code so you can recover the lost demand
• Get email alerts when a code you rely on starts failing repeatedly
• Read-only and privacy-first — never edits discounts, stores no customer data