Use of More tag

First let me say that this is a great plugin. I love how effortlessly I can send an email out to my list every time I create a new post.

I have configured Autochimp to automatically send out emails when a new post is published. Is there any way that use of the more tag can be incorporated so that my subscribers get an exerpt, and have to click to my blog to read the rest of the article.

Or, is this a Mailchimp issue?

Thanks,
Rolf