10
On [Email Template], there is no feature of registering "To" and "CC" in advance.
On the following Dynamics Community, there is the same question, and is advised to use Workflow.
It would be much better if the feature is implemented because creating workflow is such a troublesome for users.

Title CRM 2015/2016: Add a cc field to Email Template:
URL : https://community.dynamics.com/crm/f/117/t/186629
Category: General
STATUS DETAILS
Needs Votes