...
To manage project mail templates go to the Mail Templates "Email Templates" (2) page under "Add-ons " (1) section in a project:
On this page you will see all mail templates Email Templates (2) assigned for the following project (1) and tied with a particular issue type (as presented in an example below):
...
Status can be changed by activation or deactivation of a mail an email template. To do so please select "Actions" menu located next to a template, which status you wish to change (1) and then from a drop-down menu select "Deactivate" (2):
...