Makes my inbox cleaner and more secure. The infomail is now neatly out of my view and I dont see all the junk I use to see when using AppRiver or just Microsofts native spam filter. I see only the things I need to see, and spoofed messages have decreased 100% throughout the organization.
If I had to pick my least favorite thing, I would say some of the tabs to control settings can get a little overwhelming. It can also be a little hard to read the font at certain times so possibly enlarging the details and text of the site a little to make it not so "fit" to the screen.