I work in Higher Educational Publishing and we use Engagement Programs a lot. Since our selling season is in line with college semesters, things slow down in the summer and the winter. My team likes to take a look at any emails in our Engagement Programs that have not deployed to anyone yet once the semester is over and plan to send them at the beginning of the following semester. We have a lot of products and a lot of customers so our streams are often full of content and it will take quite a while to look through this manually. So, I'm looking for a way to run a report on emails that have not deployed to anyone yet. Is this possible?