The best thing about proof point is that it has multiple levels of protection, from basic to advanced threat detection. It also provides user friendly dashboard which helps in quick analysis of threats. I have seen people using this software for many years now but still there are some things that can be improved like its UI looks old fashioned and not very modern at all. If you want simple yet effective solution then go with proof point digital protection otherwise look else where. We use proof point as our main antivirus tool and we get alerts regarding any new virus or malware threat within few seconds.