Activity email notifications: disable limit or explaining wat "as soon as possible" means


I would like to receive notifications of all file activities (move, delete, create, update, etc) through email. I can achieve this trough the notification settings. However, if there are “too many” file activities, at the end of the email I get “…and XXX more”. So I don’t have a record of those activities.

I’ve set the schedule to “hourly”. I know I can set it to “as soon as possible”, however, its not clear to me when those notifications would be sent. Every time crond runs? I didn’t find any explanation of what that would mean, and I don’t want notifications every X minutes. 1 hour, or maybe every 45 minutes is perfect, but it should be unlimited.