A direct marketer promoting a service industry uses both internal and external lists.In essence, what is one main difference between these two types of lists?

Question

Quizplus · Accepted Answer

The main difference between internal and external lists is that internal lists focus on current customers and aim to develop relationships with them, while external lists are focused on reaching out to new potential customers in the general population. Internal lists contain information about current customers, such as purchase history and contact information, while external lists typically only contain names and addresses.

A Direct Marketer Promoting a Service Industry Uses Both Internal