GazChap's WooCommerce Purchase Order Payment Gateway is a free WordPress plugin designed to enhance the WooCommerce shopping experience by adding an offline payment option that allows customers to request an invoice using a Purchase Order (PO). This plugin offers customizable settings, enabling store owners to require a PO number and postal address from customers, with options for pre-filling the address based on existing billing information for logged-in users. Additionally, it integrates PO details into order notifications and the WooCommerce REST API, ensuring seamless management of purchase order information throughout the order process.

With each order processed, the plugin captures and displays the submitted Purchase Order details on the WooCommerce View Order screen. The latest versions introduce enhanced functionality, allowing users to edit Purchase Order information directly within the WooCommerce Admin screens and manage this data effectively through the REST API. While it does not generate invoices, it significantly simplifies the process of collecting and managing Purchase Order data for businesses utilizing WooCommerce.