These add-on features are somewhat the core services of other providers or partners which we thought are at best qualify for inclusion based on their impact in any organization which utilize them.
Business Email Security Service(see here) is one of the most widely used add-on features and is expected to increase even further. It allows for seemless migration from existing Email Services into a lower cost solution with greater level of security and bandwidth management. Each Appliance compresses the email it send out for delivery to external recipients, and ensures that bandwidth costs are reduce through compression and decompression of email received from external queues. This reduction is bandwidth usage translates in reduce cost, also compression technologies also act as an excryption tunnel allowing secure communications from private networks to email server, for all users and servers inhouse, so absolutely no information leakage.
Web 2.0 Application Firewall is a beta feature currently, which allows for secure publishing of social, textual, or binary data to websites, internally or external to Customer premises. In other words this firewall is a feature that can replace any publishing mechanism you may already have inhouse to publish content to websites. It uses many syndicative technologies and SSL/TLS to ensure content publications are secure.
MOD Security 2.0 is also a part of this Web Application Firewalling scheme and can act on it own for the Web Management Services that are apart of the device.