HCL Lotus Notes (IBM Notes) saves messages and other items in NSF (Notes Storage Facility) files which are not compatible with the PST (Personal Storage Table) file format used in Microsoft Outlook. As it is impossible to directly open NSF files using Microsoft Outlook,

When managing contacts from various devices as well as platforms, often, it is required to convert Excel files (XLS/XLSX) into vCard (VCF) format. It can happen that you need to import contacts into Android phone, iPhone, Gmail or Outlook