Can I integrate e-Newsletter with Google Groups?

Wow, e-Newsletter is slick! I had considered using Mailchimp but now I have one less thing to manage.
I'm hoping you can help me with a "How To". We have a Google Group with over 500 persons that we use for Chapter announcements. We're able to restrict who can send to that group and it sends to all recipients.
Can I simply add the Group email address as a "member" of my e-Newsletter? I don't want them to be Wordpress members, I simply want the email address as a member so that when I send out a Newsletter it goes to that address.