How can I see who is receiving communications, and when?

I have communications set at specific intervals during a drip-content membership. Looking in the dashboard, there is no way to see who is receiving each communication, and when it is sent. This would be a very important thing to track, especially (as mentioned in another thread) communications don't always go out as scheduled. If we had a place to view the activity on each membership, including when the communications are sent, it would be very helpful for both customer support and troubleshooting.

Does anyone know of a way to track these?