Using Mailchimp with WordPress

Is there a way to set up wordpress to use your Mailchimp account to send out blog posts to user lists? I know you can integrate Amazon SES using mailchimp and wordpress, but I don’t have an account with Amazon SES. Hasn’t anyone built a plug-in for this? I already have the subscribe widget, but I want a more complete integration. Otherwise I have to take the post content and manually enter it into Mailchimp every time I post a story.