There are three types of Thankster template projects. The first is a ‘One-off project template,’ which is simply a design template that you can use as the basis for any future one-off projects you create. It allows you to avoid building a design from scratch that you may use repeatedly. Another approach could be to duplicate an existing one-off project and delete any recipients not being mailed to.
Another type is a ‘Thankster API template project,’ which serves as the basis for API orders and for Thankster Recurring Campaigns. It does not have any recipients attached. Additionally, it has additional tools in the design editor to add ‘API text’ or ‘API images,’ which your API can dynamically pass content into when your API application triggers that template.
See the following video about the first kind (one-off project templates).