Ability to Turn Off Notifications for Closed Tasks within CTAs

You have the option to customize notifications for assigned tasks, but you cannot customize notifications for when tasks or CTAs (Calls to Action) are closed. For instance, if a CTA includes 10 tasks, the assignee of the CTA will receive a total of 11 emails after the completion of all tasks and the CTA itself. This often is overwhelming for our teams and we are looking to find ways to cut back on notifications cluttering their workflow.