To convert OST files to NSF format, use the DataVare OST to NSF Converter Software. Large OST files can be expertly and swiftly converted to NSF format without losing any data. For use with IBM Lotus Notes, there is a straightforward and secure way to convert Outlook OST files into NSF format. The software protects all of your email data, including attachments, formatting, and organizational structure. The software works with every version of MS Outlook and Windows OS. Outlook OST data is being converted and repaired to Lotus Notes by professionals and businesses. There is also a free trial version available to test the features before buying. There is compatibility for every version of Microsoft Outlook, including 2021, 2019, 2016, and so on. It supports all versions of IBM Lotus Notes, including 9.0, 8.5, 8.0, 7.0, and 6.5.