I am looking for a mailing list plugin that will allow visitors to easily signup for our mailing list. I want it to create or use existing wordpress users and not a separate database. Obviously users need to be able to unsubscribe easily and of course I would prefer that mailings were sent within WP as well so that everything is integrated. Though I guess it wouldnt be a requirement as long as the mailing list that would use a desktop email client, etc, would allow us to easily embed an unsubscribe url. I also want users to be able to unsubscribe from the list, but of course still be be wordpress users.
