I love how easy it is to set up. The interface looks great (though not as nice as some of the other services out there). It's super cheap! Their support team can be terrible at times. But they are working to improve that so far so good. We've been running our email through their service for over 4 years now without issue. There are no issues or complaints about halon from people who have used them. We use their cloud based email solution for both business and personal email accounts. This cuts down on costs and allows me to keep my domain name instead of using something else like Google Apps.