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② 後台搜尋「COD Anti-Fraud for WooCommerce」→ 直接安裝（推薦）
原文外掛簡介
COD Anti-Fraud for WooCommerce protects WooCommerce online stores from non-delivered or fraudulent Cash on Delivery (COD) orders by combining dynamic risk evaluation with mandatory WhatsApp OTP verification.
Key Features
Dynamic Risk Engine: Calculates a 0-100 risk score based on guest checkout status, cart total, and past failed/cancelled COD history.
WhatsApp OTP Verification: Automatically sends a 6-digit verification code to the customer’s phone via WhatsApp before confirming COD orders.
Smart Thresholds & Gateways: Configure minimum/maximum cart amounts for COD, blacklist fraudulent phone numbers or emails, and whitelist trusted VIP customers.
Rate Limiting & Anti-Brute-Force: Built-in rate limiter by phone number and IP address to prevent SMS/WhatsApp flooding.
Multiple Gateway Support: Out-of-the-box integration with UltraMsg API, extensible for Twilio and custom WhatsApp gateways.
Seamless Checkout UX: Modern inline UI and responsive modal overlay integrated smoothly with WooCommerce checkout (both Classic and Block checkout).
Order Meta & Admin Details: Transparent risk scores and verification timestamps displayed directly inside WooCommerce order details.
HPOS Compatible: Fully compatible with WooCommerce High-Performance Order Storage (HPOS).
External services
This plugin connects to the UltraMsg WhatsApp API to send One-Time Password (OTP) verification messages via WhatsApp to customers choosing the Cash on Delivery (COD) payment method.
Service Provider: UltraMsg (UltraMsg Inc.)
Service Website: https://ultramsg.com/
Terms of Service: https://ultramsg.com/terms-conditions.php
Privacy Policy: https://ultramsg.com/privacy-policy.php
What data is sent to UltraMsg?
* The customer’s mobile telephone number entered during checkout.
* The dynamically generated 6-digit OTP verification code text.
No customer passwords, credit card numbers, billing addresses, or purchase history details are shared with UltraMsg. API requests are triggered exclusively when a customer requests an OTP code to verify a Cash on Delivery order.
