Enabling JungleMail templates
If you want to use the built-in templates that are included in JungleMail, follow the simple installation described in this tutorial.
To activate the out-of-the-box templates in JungleMail, please open JungleMail Site Collection Settings, locate Built-in Templates and install either Drag & Drop templates or Rich Text templates or both.
Once you have installed the built-in templates they will show up in the template selection screen of the email builder. You can always choose to edit the included templates to fit your own preferences.