Campaign Monitor Integration

Perhaps I'm missing it but how do I comunicate with the members that sign up using this plugin? Is there a way to integrate Campaign Monitor so when someone becomes a member they automatically get added to a email list that I can then mass email? If not, I know Gravity Forms integrates with Campaign Monitor...so is there a way to integrate this plugin to communicate with Gravity Forms and then to Campaign Monitor?

Does this plugin integrate with ANY email auto-responders?