Let Guests add a “Post” without loging in.

What I would like to do is let the average person that comes to my site add their own “Post” to my blog(Not a comment). But I don’t want them to create an account. I would like to let them do this by having something simular to an email form with title, body, etc. that would add it to my post feed, and I would be able to log-in and publish it or delete it. Is there any way to do this or is there a plug-in similar to this?