+## :email_notifications
+
+Email notifications settings.
+
+ - digest - emails of "what you've missed" for users who have been
+ inactive for a while.
+ - active: globally enable or disable digest emails
+ - schedule: When to send digest email, in [crontab format](https://en.wikipedia.org/wiki/Cron).
+ "0 0 * * 0" is the default, meaning "once a week at midnight on Sunday morning"
+ - interval: Minimum interval between digest emails to one user
+ - inactivity_threshold: Minimum user inactivity threshold
+