How to recover NSF Archive Emails in Lotus Notes? This is a very similar query for Lotus Notes users and I only suggest you download this SysInspire NSF to PST converter Software. This is one of the best NSF converter software that has a wonderful GUI and every user, technical or non technical, can use it very easily. It has a bulk conversion option which is really useful. You can simply do bulk conversion of NSF files at the same time. It can Export Lotus Notes Emails address book, calendar, task, Journal to do or more items and restore Lotus Notes to multi formats such as NSF to PST, Mbox, Zimbra, EML, EMLX, MSG, HTMLetc.