You may occasionally need to reach out to customers and let them know something about their order. Maybe the order is delayed or maybe you want to ask them if you could swap one product for an equivalent product. When that happens, you'll want it all documented in one place. You don't want to use e-mail to do this because, a year down the line, you won't know why you did what you did. That's why WooCommerce has the built-in ability to contact a customer from the order page; the outgoing message is logged on that page.
You'll need an order in your store. If you don't have an order yet in your store, make a test order using the Bank Transfer gateway.
Communicating with customers can be done directly from the order page, by performing the following steps:
From the WordPress admin, go to WooCommerce | Orders.
Click on any of the orders.
On this page, you'll see the Order Notes panel and, at the bottom of the panel, there will be a field called...