

Think you were using IBM Notes (formerly known as Lotus Notes) previously.
You have recently switched to Microsoft Outlook.
Your old emails and other content are stored into NSF database files which can only be accessed on IBM Notes.
But you are not using the IBM Notes now, and Outlook doesn’t support NSF format.
MS Outlook is purely an email client application that also works as a personal information manager.
Managers use it as an email client application in organizations and large enterprises.





