I like that it can be used to scan emails in bulk as well as individual pieces of an attachment or message so you don't have to go through each one individually for spam/malware detection purposes. It's not intuitive at all - which is why we use other software instead (like SpamAssassin). If you're looking into this product then make sure they offer training courses because there are many things about their interface which could benefit by being more user friendly. We were using another tool before but had problems with false positives when scanning large amounts of messages. This changed our workflow dramatically once we started implementing it across multiple teams within my organisation.