Need to login, write report, save for later, submit, not as post all from frontend.

I run a WP site that I would like to add the ability for members to log in and write a report, save it and return later if needed to finish it and submit. This needs to be from the front end and would not be a post to the website. Upon submission it would be emailed to relevant parties.

Does anyone know of a plugin or plugins that would allow for this functionality.

Thanks,
Patrick