Magento Open Source, 1.9.x
Email Body

The process of customizing the main body of each message is the same as the customizing the header or footer. The only difference is that there are many templates, listed in alphabetical order. You can use the templates as they are, or customize the most important messages first, such as messages related to customer accounts, and customer activities. For a complete list, see the Email Template Reference at the end of this section.