Long shot ... I'd like to send my subscribers new content

Long shot ...

I'd like to send my subscribers new content a day before it hits the blog ...

Is there a plugin for this?

I think it could be a powerful way to encourage people to subscribe to email lists, as subscribers get new content first. In the interest of social interaction, it'd be cool if the content was live and permalinked ... just not visible on the front page / blog / wherever content eventually shows up.

Ideas?