Summary: VSN is a plug-in for Outlook/Outlook Express that makes for sending and receiving encrypted emails literally a snap. There is a Web portal for users outside the enterprise, and a secure file transfer application add-on to Windows Explorer as well.Advantages: VSN is extremely easy to use once setup. Enterprises should consider VSN if they are looking for more control over things like user experience, which help desk number to call, control over cryptographic elements like root certificates, integration with other systems like Blackberry Enterprise Server. Also, if they are looking to off-load managing third-party authentication and providing help desk support, then VSN should be on your radar. Disadvantages: You will probably need to coordinate the installation among several different IT departments. The online documentation is somewhat confusing.Voltage Security Inc. 4005 Miranda Avenue #210,Palo Alto, CA 94304 (650) 543-1280, http://voltage.com/products/vsn.htmRequirements:Windows only, works with Outlook (2000-2007), Outlook Express and Vista Mail applicationsPrice: $65 per seat per year, includes both secure email and secure file transfer

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