It is very easy to use even for less technical people in our organization who have no idea about encryption or security issues at all! The interface of this product looks simple but it has many features that make email secure without any hassle. I would say there are some minor bugs which can be improved upon. But overall its good enough as long you know what your doing with their services. We were using MailChimp before we started working together with them. Their pricing was way too high compared to other similar products out there so switching over wasn't an option for us. With echoworx everything became more transparent and easier to understand.