Hi Ashley,
There is not a native, customer facing functionality for tracking the sending of notifications, subscriptions and reminders. What we typically recommend if there is a need for auditing of email notifications is that a notification that needs to be monitored be copied with all the same triggering criteria and sent to the Admin who is responsible for keeping an on on that, or that they are included in the list of users being notified.
Additionally for those who are having issues with a specific user who might not be receiving emails because they are being rejected or delayed if you put in a support case as an application or account admin with the specific email address needing to be checked we can check with our email provider to see if email notifications going to that user are being rejected or delayed. That can just take a little turn around time as we do have to reach out to their logs. I hope this information is helpful.
