Apart from the Pricing blurb on your website, I can't find what the differences are between your Free and Essential versions (or indeed the Enterprise version). Is there anywhere that describes these differences in detail?
My subscriber numbers are very low and will remain so as it's a membership site, so I have no need for automatic mailing or detailed segmentation or analysis, but better statistical data and the removal of the "Built with Acymailing" logo are of interest. (When did that sneak in anyway?)
Thanks in anticipation.