The outstanding support. Being in the IT business for over 20 years I have experienced support from various companies. Votiro's support team was one of the best I have experienced so far. They are very responsive and have qualified engineers which stick with you until the problem is solved. They have direct access to developers if necessary. Other things I really liked about Votiros CDR Solution (Content disarming and reconstruction) - they are very innovative, when I first saw their technology I was immediately hooked and purchased their solution for 100 users. Seeing their progress from an installing on windows machines to their final solution - linux based virtual appliances, was a joy to follow. I made quite some improvement suggestions and while one or two were implemented in the next release (this was in the very beginning) others were implemented later on. I didn't hear for 3 years, and then all of a sudden I got an email stating that what I suggested 3 years ago, will now be implemented in the next release. What a nice surprise, that my improvement tickets don't land in some archive folder, but are in reality monitored and valued. They also added support for more and more file types over time. - I really love the fact that once its running, you basically have nothing to do, it just runs. Just watch out that the disk space doesn't fill up and that the license does not expire. The support team happily issued a temporary license until I had sorted out the renewal with the sales team. - It's just another MTA, so you just direct mails to it - I like the UI to configure the policy/ruleset. Once you understand it, you can configure almost any scenario you like! - With upgrades - you just created a ticket with them and they do everything for you - They respond very fast - normally on the same day, sometimes within the hour - If you have any questions you just create a ticket and they always help you - If a user wants an original file you can just release the original email to him, directly from the snappy Web interface. However I would suggest that you test the attachment in a protected VM with no connectivity to your normal network.