This post is part of a series of guest posts authored by popular bloggers and internet business consultants.
Today's guest post is written by Dean Shanson, a professional marketing writer and a regular contributor to some of the Web’s leading marketing blogs.
Email newsletters allow businesses to stay in touch with customers. They ensure that buyers haven’t forgotten them and they increase the chances that the next time a customer wants the kind of products or services they offer, their company will be the first to come to mind. They’re a form of drip marketing — but…