Select the email template from the list under Email Templates: then select Edit as seen below.
This will open the menu where you can edit the content of the email template you selected from the list.
Under Message: click Change as seen below.
Then select a program to open the file in e.g. Notepad.
This is what it should look like by default.
From there you can add, remove or edit the email content.
The text can be changed aswell as including different macros if required.
For the full list of macros and more details about the email feature see link below.
http://www.1stoporders.com/1StopOrdersDefCE.html
Simply save the file when you have finished editing the template and close the editor.
An example of a feature you can add is seen below.
This will use the customer’s name and give them a discount code for their next shop.
You can test the email by clicking Test Send in the Email tab in the Options menu. This is seen below.