As a Confluence administrator I would like to disable the 'Show Changed Content' to all users

Problem Definition

By default, the Show Changed Content functionality is enabled to all users as described in the product documentation: Email Notifications.

This functionality may overload the Confluence server and/or the email infrastructure if many changes in pages occur at the same time.

Currently, there's no way for the Confluence administrator to disable this functionality to all users.

Suggested Solution

Make it possible to disable/enable this feature site-wide or to make it disabled by default to new users.

Workaround

The following KB describes a workaround to disable this functionality to all existing users in the database.
How to disable Show Changed Content to all users