> For the complete documentation index, see [llms.txt](https://appsetup-eng.gitbook.io/cod-blacklist/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://appsetup-eng.gitbook.io/cod-blacklist/cod-blacklist-by-appsetup.md).

# COD Blacklist by Appsetup

Stop risky Cash on Delivery (COD) orders before they happen. COD Blacklist lets you import customers into a centralized blacklist and disable specific payment methods (like COD) for them at checkout—reducing RTO, fraud, and operational costs.

### **Overview**

* Maintain a single blacklist of customers you don’t want using certain payment methods.
* Import customers (e.g., via CSV) and manage them in one place.
* Enforce payment method restrictions at checkout using Shopify Functions for speed and reliability.

### **Key Benefits**

* Reduce RTO and Fraud: Prevent known offenders from selecting COD.
* Targeted Payment Controls: Disable specific methods (COD or others) only for blacklisted customers.
* Simple Management: Import, review, and update your blacklist quickly.
* Minimal Checkout Friction: Keep all other payment methods available for everyone else.

### **How It Works**

* Import Customers: Add customers to your blacklist (CSV import supported).
* Choose Payment Methods: Select which methods (e.g., COD) to hide for blacklisted customers.
* Enforce at Checkout: Restrictions apply instantly via Shopify’s payment customization.
* Test & Launch: Verify behavior with a quick test checkout.

### **Common Use Cases**

* Disable COD for customers with prior RTO or chargebacks.
* Block COD for specific emails, phones, or customer IDs imported in bulk.
* Allow all non‑COD methods for blacklisted customers to preserve conversions.

### **Why COD Blacklist?**

* Focused and Effective: Purpose‑built for blacklisting and payment control.
* Fast to Configure: Set once, enforce everywhere at checkout.
* Scales with You: Manage large lists and update in seconds.

### **Plans & Limits**

* Free tier to get started; higher tiers increase monthly usage and scale for growing stores.
* See the in‑app Pricing page for details.

### **Requirements**

* Shopify store with Checkout Extensibility enabled.
* Activate the app’s payment customization to enforce rules.

Need help? Use the Support link in the app or contact Appsetup.