In our small company, I am the sole user of Act-On. I use it almost daily to send emails to multiple groups of prospects and customers across the organization. Act-On allows us to quickly and easily send marketing emails, retention emails, and weekly newsletters. It also allows us to take care of opt-outs easily, so we can stay compliant and keep our deliverability high. Within our account, we are able to manage thousands of contacts and view each contact's profile to see how many emails they have been sent, how many they have opened, and how many they have clicked, which keeps us organized and on task with how we are communicating with our prospects.