You can Open NSF file from Lotus Notes by the help of eSoftTools NSF to PST Converter software, it has many features it can convert NSF to PST, EML, EMLX, MSG, Office 365, Etc. 13+ file formats for conversion, it has a feature of email filter option you can filter your mails by using dates, it has can export email with attachments such as photos, contects, calendar, it has feature of split option you can split your PST file in multiple small sizes such as 10gb to 5gb or 1gb, it can recover your file without losing any data. It has technical support. You can get help by mail or live chat.