Try SysInspire NSF to PST converter software. This tool is one of the best tools for conversion. It can show the preview of an NSF file while conversion. It can convert NSF to PST, EML, EMLX, MSG,etc. It has 13+ file formats for conversion. It has Email filtration option users can filter Email by using specified dates. It can support all versions of Windows even if it supports all versions of Lotus Notes. It has a demo version where you can convert 25 files from each folder. It can recover all corrupt mails.