In “Settings” > “Notifications” you can select from which events and how often you are notified about via email. You can get notifications about new applicants (either right away when an applicant has submitted their application, once a day or once a week), upcoming tasks (either once a day or once a week) and applicants selecting interview time (right away).
Select the checkboxes if you want to get those notifications and select the timeframe from the drop-down menu. Click save when you are ready.
Notifications come from email@example.com address. At the end of the email, there is a link to the notifications settings page if you ever want to change your settings.