Extended reward points program allows you to award points to your customers for certain actions: registering, subscribing to a newsletter, commenting news, and blog posts, leaving product reviews, making the first purchase. Moreover, now you can award your customers with points on specific dates, for example, holidays. Customers will receive message notifications about that.
Please find more information about how to install plugins here.
The plugin is provided absolutely for free and includes source code. Find the project Github repository here.
UPDATE: nopCommerce team doesn't plan to upgrade this plugin to the latest version. Our community is more than welcome to continue development of the plugin. Please feel free to use our source code.