Admins, Staffers, Leaders, and Interns will by default receive the following email notifications for people or pages they're following, or people that are assigned to them:

-new comments;
-new flags on comments or pages;
-new event RSVPs;
-new feedback;
-new volunteer signups;
-new paid memberships;
-new petition signatures;
-new endorsements;
-new suggestions;
-new surveys;
-& new vote pledges.

Additionally, Admin and Staffers can receive these notifications for everyone in the Nation if they so choose.

Notification settings are set on an individual user's record under the "Notifications" tab.