How to create a newsletter from a template
To create a newsletter from a template, select Email-> New Message From Template.
The list of templates will appear, and when you click on one of them, it will be loaded in the editor page, ready to be customized. Now, the only thing you have to do is to complete the newsletter with your own content.
Once the template has been modified, click on "Save" at the bottom of the page.
You can also start from a new email message (Email -> New): you will find at the top-left of the page the button "Template", which starts the same template selection Wizard.