Turn alerts on or off
On that screen you can turn change emails on or off.
Skip small changes
You can set a minimum change size, so a digest is only sent when a change is big enough to matter to you. Size labels match Main view (S/M/L and DWC).
What a digest contains
Digests are based on changes found during Daily checks. Each one lists the pages that changed, with a change summary and a link to open each diff in the Diff viewer. You can also review everything in Main view.