In the Kingston release, ServiceNow email notifications support email digest capability.
Administrators can modify notifications to add a 'digest' version of the content. For any digest-enabled notification, users can opt to receive that notification as a summary over a particular interval (e.g., once every 24 hours). While there are some base intervals provided in Kingston, you can add your own if those are not sufficient.
Not every notification requires configuring a digest version. Consider a "P1 Incident assigned to me" notification. Perhaps that notification needs attention quickly. Do you want users potentially not getting information about it until some interval has passed?
On the other hand, you might consider an "Incident Commented" particularly noisy if the same record is commented over and over in a short period. Rather than receive one email per comment update, enabling a digest version gives your users the ability to reduce email load in their inbox by electing a digest version which summarizes the changes about that record, in a single email.
Your user sees the digest toggle in the UI16 notification preferences dialog, so it is up to your user to select which version of that notification is preferred.
See the documentation here.
