Expired and declined cards quietly cancel paying customers. SimpleRecover watches your Stripe account, emails each customer a short plain-text note from you with a one-click link to update their card, and Stripe retries the invoice. Emails follow the decline reason (expired card, insufficient funds, 3D Secure), and a dashboard shows what came back. Connects in 60 seconds, no code, 0% commission, flat $9.99/month.