Name - Template name.
Category - Select Mail for email notifications.
Mail address - Which adress should a template be sent to (preferably do not enter)
Mail Subject - It is best to enter this in the format “Order {order_num} issue”.
Mail Body - The text of the message that will be delivered to client (you can use the one from the screenshot).
Attachment File - Add a file, which will be sent with the message.
Attach invoice from order(if exists) - (Do not select) If active, an invoice, generated from the order, will be attached to the message.
Attach return label - (Do not select) If active, a return label, generated from the order, will be attached to the message.