I'm finally getting my organization to use Alerts. Which is great. We are using SharePoint online. I send each team member a daily summary at 7:00 am.
The following are the settings: Change type: All Changes Send Alerts for These Changes: Anything Changes When to Send Alerts: Daily Summary 7:00 am
From the screen shot below, you can see one team member has been working on a file, and every time the file saves, the alert records it, and if they've been working on the file all day, there are several lines for each file. The team members have to scroll a long way down in the email to see all the files that have been modified.