Cash on Delivery is the lifeblood of D2C in South Asia and MENA — and its biggest silent margin killer. Fake orders, out-of-zone deliveries, oversized baskets that never get paid, and Return-to-Origin (RTO) shipments quietly eat your unit economics while Odoo's stock COD payment method does nothing to stop them.

The Advanced Cash on Delivery (COD) Suite is a build-to-order Odoo module engineered by ECOSIRE to put COD under control. It is NOT an instant apps.odoo.com download. We design, build, install and support it for your specific catalog, delivery zones and courier reality, then hand you the source. Typical delivery is one working week depending on scope, and it runs on Odoo 17, 18 and 19 (Community or Enterprise).

Under the hood, the module extends payment.provider / payment.method and the eCommerce checkout controller so COD becomes conditional rather than always-on. A dedicated cod.rule model (models.Model with fields, @api.depends computes, and @api.constrains validators) evaluates every cart against your min/max value thresholds, product and category exclusions, and geo-eligibility (country, state and ZIP/postcode ranges) before COD is even offered as a payment option. When COD is allowed, a configurable COD fee — fixed amount or percentage — is auto-injected as a dedicated order line so it flows correctly into the sale.order, invoice and QWeb receipt.

To attack fake orders at the source, the suite adds phone/OTP verification at checkout: the shopper's number is verified via your chosen SMS gateway before the COD order is confirmed, and unverified attempts are blocked or flagged. A COD-to-prepaid conversion incentive (configurable discount or free-shipping nudge) is surfaced at checkout to gently push high-risk baskets toward prepaid — the single most effective lever against RTO.

Everything is admin-configurable from Odoo Settings with proper access control: ir.model.access.csv grants plus record rules scope COD rules per company/website in multi-company and multi-website setups. Automated actions and server actions flag suspicious orders, and every eligibility decision and fee is auditable. A clean XML-RPC/JSON-RPC surface lets your courier or fraud-scoring stack read and act on COD status. You get benefit — fewer bad orders, protected margin, cleaner checkout — grounded in Odoo-native architecture your team can maintain.