Email marketing has come a very long way, indeed. Once upon a time, email marketers sent out a generic batch of emails to a monster list of unsegmented contacts and hoped to hit a target audience. It was the “cast a wide net” method. The idea being, send a large enough email blast, you’re bound to snag a few good leads.
However, marketing methods have changed dramatically, and it’s now widely accepted as ineffective (not to mention, bad form) to send huge email blasts to unsegmented lists.