History
Email Notification Requests
This provides stats for all of the recent emails that have been sent.
Note
Not deliverable would include any bounces or invalid emails or anything that would make the email undeliverable.
Push Notifications
This is a great way to keep track of recent push notifications, who created them, when they went out, if they were sent successfully.
System Notifications
This provides stats for any automated system emails or push notifications that have been sent.