The Raiser's Edge NXT add-in for Outlook is available through the Microsoft Office Store and the available apps section of the Raiser's Edge NXT Control panel.  

Please be sure your workstations meet the requirements below before installing.

Organization is live with Raiser's Edge NXT web view
2. User has been invited and has accepted their invitation
3. Outlook server-side - Microsoft Exchange Online, Exchange Server 2016 or above
4. Outlook client-side - Outlook 2013 or above for Windows, Outlook 2016 or above for Mac, Outlook 365 or latest version of Outlook for iOS
5. Ensure EWS is enabled on your Exchange server (Note: this must be completed by an administrator for on the exchange server)