Newsletters and email lists are one of the best ways to turn your website into a valuable business resource. Everyone has a different way of doing this and their customers/visitors have different expectations too. The good news is that there are lots of options to add this functionality to your site. The following lists 18 plugins to help, and of course each plugin has its own variations. It may take a bit of research, but I gotta believe there’s one here that will meet your needs.