IS IT POSSIBLE TO UNLOCK CONTENT BY ENDING AUDIO OR VIDEO

Let me explain..

I have a member area, members are introduced to a course. Right now I have day 1 through day 7.

I am trying to find or build a solution that when the new member listens to content and finishes listening or viewing a video.. an email will be sent telling the new member that day 2 will be available soon. Or that 2 day is now available.. so this is all based on a users action.

So ideally day 2 page is now unlocked based on the users previous action.. Is this possible with any wordpress plugins out there?

any ideas on how to accomplish this?

Thanks

EJ