Not sure if this is an idea or a question, but right now follow up emails only go to attendees. I don't see a setting to send to registrants.
I would love, however to be able auto-send the same or a different email to registrants that did not attend. Our trainings are always voluntary, but we also offer the recorded version which is available via a link in the follow up email.
I could do this manually using the reporting, but scheduling myself to do this 6-8 times a week every week seems like quite a lot.
Count my company as a "yes please" vote for this - I need folks who did not attend to receive the session recording without me having to manually send it.