It is very easy to use, has a lot of features and is very flexible. The support team is always there to help you out with any questions or issues that you might have. I haven't found anything that I dislike about ENG. If you are looking for a good contact management system, this is it! There are so many other options available in the market but if you want something simple, this is the one to go with. We used ENG as our contact management software. This helped us to keep track of all our contacts and their emails.