> For the complete documentation index, see [llms.txt](https://docs.reduxpayments.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.reduxpayments.com/how-redux-works.md).

# How Redux Works

- [How Redux Recovers Failed Payments](https://docs.reduxpayments.com/how-redux-works/how-redux-recovers-failed-payments.md)
- [What Is Involuntary Churn](https://docs.reduxpayments.com/how-redux-works/what-is-involuntary-churn.md)
- [How The AI Retry Engine Works](https://docs.reduxpayments.com/how-redux-works/how-the-ai-retry-engine-works.md)
- [Timing Optimization Explained](https://docs.reduxpayments.com/how-redux-works/timing-optimization-explained.md)
- [Decline Code Classification Explained](https://docs.reduxpayments.com/how-redux-works/decline-code-classification-explained.md)
- [How Email, SMS, And In App Recovery Work](https://docs.reduxpayments.com/how-redux-works/how-email-sms-and-in-app-recovery-work.md)
- [Does Redux Contact Customers](https://docs.reduxpayments.com/how-redux-works/does-redux-contact-customers.md)
- [How Redux Protects The User Experience](https://docs.reduxpayments.com/how-redux-works/how-redux-protects-the-user-experience.md)