The younger generation is aggressively marketed via the internet. Many companies ignore them in direct mail marketing campaigns, thinking young adults are only interested in the digital world. In fact, young adults are a rich opportunity for your direct mail marketing campaign if you use the right strategies. Before you can effectively market to young adults, however, you must first understand the mind of the millennial. Millennials make up a large portion of the workforce today and have different values than the generations before them.