You can 'watch' a Confluence page, blog post or space. Confluence will then send you a notification by email whenever anyone updates the watched content.

You will receive email notifications for:

• Edits (unless the user clears the Notify watchers check box).
• Deletions.
• Attachments, including new versions or deletions of an existing attachment.
• Comments, including new comments, edits of existing comments or deletions of existing comments.

By default, Confluence will assign you as a watcher of any page or blog post that you create or edit. This behaviour is called 'autowatch'. You can control autowatch. 

There is no daily digest for email notifications. You will receive an email notification every time someone makes a change.

You will not receive email notifications for content changes due to the output of a macro, because the page content itself has not been edited.