DM News has been publishing a series of articles from its "Essential Guide to E-Mail Marketing" since mid-October. The guide, it says, is intended both for experts and for beginners. As with its previous "Essential Guide on Search Engine Marketing," the email guide begins with the basics and advances to the advanced level, with research and case studies interspersed; it includes pieces ranging from "How to Craft Effective E-Mail" to "What Finance E-Mail Subscribers Want."

According to various estimates, email marketing is growing 25-30 percent annually, with email budgets up more than 60 percent in 1H05 compared with 1H04.