The ability to communicate with all my clients at once, in real time! This makes it so much easier for us as an agency compared other CRMs I have used before (Salesforce - Market Force).
There are multiple different ways of communicating which can be overwhelming but also very helpful when you need specific details about your client's business needs or projects they would like help managing through our services team!! Real-time communication has been key here because we serve many international companies who work remotely most days during their US office hours & often into late night/early morning depending upon where each location falls within those times zones..