Sending a media message to a highly targeted audience. The opposite of broadcasting, narrowcasting is also considered a form of niche marketing. Narrowcasting has been around since the days of radio. In modern practice, it spans traditional direct mail, TV, email marketing, paid search, online video, and in-person event marketing. Trade shows can also be a particularly valuable forum for business-to-business (B2B) marketing.

The 3 Things To Avoid When Emailing Your List
When you decide to have an opt-in list, it is not just a matter of sending your subscribers your promotional newsletters or catalogs.