It's a really great plugin, only inches from 5 stars. If you are looking for a newsletter plugin I would deffinitely recommend this one. You can configure almost anything so even multilangual use is easy. And despite the tons of cnfigurable things it works fine out of the box. The only thing which needs a little more design is the UI. I mean it is on a good path, but I think it's not always that ergonomic as it could be. Though the short step-by-step introduction on the main page is very usefull, it wouldn't be necessary with a better designed user interface.