When you have to send a message to your customers using the PrestaShop interface (from the order page), you can choose to save this message in order to send it out again to other customers with similar questions, comments, or concerns.
To do this, go to the "Order Messages" page under the "Orders" menu. One default message is already saved: "Delay".
To add other message, click on the "Add New" button. You can also edit the default message.
The form goes to the essentials:
Once done, click on "Save".
You can create as many messages as needed.
Once you pre-written messages are all set, you can send them by going directly into a customer's order:
Your customer will receive the message on the email address associated with this account. To follow-up on the conversion, go to "Customer Service" page, in the "Customers" menu.