Installed easily (after I allowed writing to the media directory) and was easy to configure. Adding current database users was straight forward. The newsletter creation is very simple.

As stated in another review; if you add the subscription as a Module to the left or right column on your site, when submitting your subscription it will redirect you to the subscription page. This will probably confuse the user to think that they have to subscribe again. There should be an option to redirect to a different page after the subscription is complete.