OK,...Can this be done now with Prezi?

It's been a couple of years, so I'm assuming that by now one can buy Prezi outright (not lease) and then create a prezi and share it with co-workers across the country via email where they can go in and edit it as they see fit just prior to their meetings.

Is this correct?

I'm not talking about sharing on the cloud or on the Prezi server, but via email and allowing anyone to edit it after I'm done with it.