NEO is a productivity add-on to Outlook
NEO automatically organizes your email to make messages easier to find and manage.
An alternative interface for the email component of Outlook, NEO is meant to enhance Outlook, not replace it.
NEO works with Personal Folders and with all Exchange Server mailboxes using Outlook 98, 2000, 2002 (XP), 2003, 2007 and 2010 (32 bits) and all versions of Exchange Server. Note that NEO does not work with Outlook Express.
NEO will not affect your Outlook mail
No need to worry… NEO doesn't change anything in Outlook - just the way you look at it. NEO is only an interface to your email messages, which are retained in Outlook message stores.
NEO organizes your email by creating a separate catalog that is completely independent of Outlook. Outlook continues to collect your messages while you are using NEO. You can safely use NEO without any worries about losing messages or getting out of date.
NEO does not make copies of messages. Only indexes to the messages are created and stored. Your Outlook messages continue to be updated.
Continue to use all your Outlook features
All Outlook features work just as before. You can use NEO alongside Outlook (and switch conveniently back and forth), or use it instead of Outlook.