Currently, in HubSpot lists, workflows, and filtered views, you can only view contacts sent an email and the various actions based on an email sent. But if we want to review contacts who should have received an automated email, but were never sent that email, there really is no easy way to do this.
You can create a workflow if/then statement to show who was sent the email, and then if they were not, maybe update a custom field or create yet another list with the contacts not sent the email, but again, this should be easier to do especially if you need to do this more often than you'd like.
