It is not currently possible unless you build a custom newsletter solution of some kind.
In general one has to consider the differences between email clients and web browsers. There are lots of things you can do in web page content viewed in a web browser that cannot be done in email. Even styling html cannot be done the same in email and has many limitations. So this does not make it really feasible to integrate web page content in email newsletters easily. Our newsletter feature does not try to do that, it only provides a way to author and send newsletters.