There are hundreds of messaging platforms for your website on the market. Which one to choose? Intercom is a scalable messaging that provides a more personal experience for you and your customers comparing to other platforms. Just check them out at intercom.com
With Intercom plugin you'll be able to integrate this awesome messaging platform with nopCommerce. The plugin includes some important features, that you wouldn't be able to integrate pasting just a basic Intercom script into your HTML. For example, passing a nopCommerce user data into Intercom (see the full list below). Just imagine, how effective can be a dialog between a customer and support staff, if last one knows what is in customer's cart and wishlist at the moment, what is the customer profit (total orders), when was the last order, what are the customer nop roles and shipping address! And all that information is available not leaving an Intercom chat.
There is a free demo version available with only one restriction - Intercom will be accessible on homepage only.
For documentation and details please refer to this link. You may also find a plugin for your older nopCommerce version there!