Effectively using MailChimp and its API to communicate with your customers

Image representing MailChimp as depicted in Cr...Image via CrunchBase
I've been managing a mailing list with MailChimp for a few months now and I'm tremendously impressed with it.  It's a powerful application that produces effective email campaigns and it has a huge array of features. I thought I'd write up some work I just did with their API this week to show you how to effectively manage your communication strategy.