The best part is that it's easy to use, has all features needed in one place (and they're not overloaded), can be easily integrated with other systems or apps used by my organization/company; works well when I'm offline too! It would also great if there was an option like "Send me emails from this account" so as soon as somebody sends something via some 3rd party app - he gets notified immediately about new mail arriving at his mailbox without having him open up another application first. Some…