Efficiency is important because emails are vast. The typical strategy is to go net fishing. This means throw out a wide net and hopefully catch what you want, but you will also catch a bunch of viewers that will not result in a true lead. An important part of the strategy is to have specific content to reel in a true lead that hopefully results in a customer.
This is where Drip Campaigns and Nurture Campaigns come in and let you target a specific audience with particular interests.
Once we have the viewer interested, we lead them to a landing page with more information and a conversion action. This could be purchasing a product, joining a mailing list, downloading a white paper, or even prompting them to make a phone call.