How I Cut Fake COD Orders by 30-40%

The Problem

If you’re a small COD seller, fake orders eat you from the inside. You pack the order, you ship it, and at the last moment the customer refuses to accept it. The entire cost comes out of your pocket.

On top of that, most sellers send every order to their ad platform, whether it’s confirmed or not. This teaches Meta’s or Google’s algorithm to chase the wrong audience, people who place orders but never actually buy.

The Idea

I closed both leaks at the same time. When a COD order comes in, the customer gets a WhatsApp message with their order ID and a confirmation code. No confirmation means no packing and no shipping.

The conversion signal only goes to the ad platform once that order is genuinely confirmed, not the moment it’s placed. That way the algorithm learns from real buyers instead of anyone who taps “place order.”

The Build

I built this myself using Claude Code. It’s a custom WordPress plugin on top of the Amazon Shipping SP-API. COD orders get an OTP and WhatsApp confirmation layer, and a ₹50 COD handling fee is built into the flow.

Until the WhatsApp confirmation comes in, the order stays on hold. It doesn’t get packed or shipped. The ad platform signal is tied to that same confirmation step instead of raw order placement.

The Result

I’ve built and run this system for jewelry and skincare clients. Based on what I’ve seen since setting it up, fake and unconfirmed COD orders dropped by roughly 30-40% for both.

A manual shipment trigger for on-hold COD orders is still in the build queue.