Email marketing is one of the most effective marketing strategies available. It allows you to communicate directly with your clients in a highly personalised way.
Email is a reliable and cost effective form of communication between your brand and your customer. It has a high return on investment rate, and is relatively simple to manage once it is set up correctly.
Of course, it's possible to email clients directly using regular email software. But using proper newsletter marketing software adds a bunch of features which make your efforts measurable. You can not only see who's received each newsletter, but who opened it (and when), who clicked on links... and who hasn't. This helps you refine future efforts.