Major update in beta, would love some testing and final request made for the final release.
This module integrates the Campaign Monitor API into Drupal so you can give users the ability to subscribe and unsubscribe for your Campaign Monitor manage lists through a block on your Drupal site. You must have an account with Campaign Monitor (http://www.campaignmonitor.com) to use this module.
Contributed and maintained by T-Rex Art http://www.trexart.com.au
Development for 6.x version of module sponsored by Benkard Marketing Systems Inc.
This beta release requires that you install the libraries module and moves the Campaign Monitor library from the "lib" folder to "site/all/libraries/campaignmonitor", which makes further module upgrading easier. See the README.txt for more information.