I think that MPX has made my life easier by giving me more options to choose from when it comes down choosing email protection software! It's not too easy at first but once you get used they have some really good features like allowing users access via mobile devices etc so all staff are able use their own device without having admin rights (which was something i disliked about other companies).
Also being hosted does mean we dont need any servers/hardware hence saving costs - also means no worries if someone gets hacked since its stored online rather than locally meaning less risk overall!!