Amazingly easy to install and set up, it’s really out of the box and also uses smarty templating! The number of settings you have make this a very versatile extension that adapts to any need, and nothing complicated about them, just simple “on/off buttons”. Even the Cron can be modified from the admin menu.
Besides this, the support is extremely helpful! They say customizations are not part of the support, but i had plenty of help!