draft email approval?

Hi, I’m new to Word Press. I don’t know if the following has already been created as a plug-in or discussed but if someone could point me in the right direction?

What I would like to do is to have users that don’t have permision to publish, just create drafts. When they create a draft an email goes out to the admin and then the admin can approve and publish the draft through email. I found a plug-in that emails admins when a user creates a draft, but I can’t figure out a way to then publish the draft without having to go and log-in. Is this possible to set up?