In order to disable an email template, the template needs to be customized first. Once the Email template has been customized, it will show up in its own tab, like this:
Similar to the widgets and forms functionality, email templates can also be disabled. The option to disable an email template will show up in the Actions dropdown, like this:
Disabling email templates will be a way to troubleshoot our default functionality, related to any automated or custom email template.