Opencart Send pdf invoice via email on order Complete

The system automates the generation and sending of a PDF invoice to customers, providing a clear and professional summary of the status of their completed order. Once an order reaches the "Completed" status, the invoice is automatically dispatched, streamlining the communication process and enhancing customer satisfaction. To configure this feature, navigate to System -> Settings -> Your Store -> Option -> Completed Order Status, where you can easily customize how the "Completed" status is handled. This automation not only saves time but also ensures accurate and consistent documentation for both customers and store administrators.