A business that specializes in sourcing contact lists that direct marketers can rent for an email or marketing campaign. List brokers typically have access to a huge variety of lists and existing relationships with list owners. They also have expertise in recommending the best lists to use based on your target audience, brand, and marketing goals. In exchange for you renting a list, the list broker typically charges a commission, which the list owner pays for.

Combining Email Marketing with Other Types of Marketing
Whether you choose to do your marketing online or offline, one thing does not change. This is the concept that no single marketing strategy will be as effective as a combination of two or more marketing strategies.