There are two built-in customer groups in OpenCart, Default and Wholesale. By default, all new customers are linked to the Default group. We are able to add and delete new customer groups. The following chart shows a sample customer organization:

For example, if we determine that some customers are spending a lot, we can assign these customers to the High income level group and send them email messages about new, highly priced items in the store.

In another example, we can determine regular buyers and encourage them to spend more by sending special discount codes via email messages.