One interesting thing about this plugin is that it does show you a list of emails in queue. Okay, but are they being sent? When? How much longer until they are complete? Why are they listed as draft? Do I need to do anything else? Why are there no other instructions?
Basically, this is a great idea, but looks as if it does... nothing.
Plugins should have an explanation of what's going on, how to use it, what the functions do, etc. The list of emails in queue need some sort of note that tells you what is going on... if anything.
This is an unfished plugin if you ask me. But, I do hope the author puts more time into it. Could be handy later for breaking up (throttling) bulk subscriber emails and notifications.