Stellar Converter for NSF

NSF to PST Converter Tool

Powerful software widely recommended by IT administrators & experts worldwide to convert Lotus Notes NSF mailbox items to Outlook PST format. The tool exports mailbox data from NSF to Office 365, MSG, EML, RTF, PDF, & HTML. It supports Lotus Notes 10.0.1, 9.0.1, 9.0, 8.5, 8.0.2, 7.0, 6.5, and 6.0 versions.

  • Converts NSF to PST, with Preview to help choose & save specific items

  • Free NSF to PST conversion for up to 10 items per folder
  • Converts multiple NSF files to PSTs (Tech Version)
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*Free download allows to preview the converted file and save 10 items per folder.

Stellar Converter for NSF Supports Many Use Cases

Need to Open NSF File in Outlook?

To open Lotus Notes NSF data file in Outlook, you must convert the NSF file into Outlook compatible data file format such as PST. You can convert NSF to PST manually by exporting the NSF file contents to a CSV file, and then importing the CSV file into Outlook. However, the manual process can be time-consuming and involves data loss risk. Use NSF to PST Converter tool by Stellar® for quick & precise conversion.

Need to Export NSF mailboxes to Office 365

Microsoft does not provide any built-in utility to directly export mailboxes stored in a Notes Storage Facility File (NSF file) to Office 365. Stellar Converter for NSF software allows users to log in to an Office 365 account and export the NSF file items to it. This helps save a considerable amount of time and effort required to migrate a large number of Lotus Notes mailboxes to Office 365.

Need to Convert Multiple NSF Files into PST?

Lotus Notes save emails, contacts, and other mail items in different files. With Stellar Converter for NSF software, you can easily convert and save multiple NSF files into a single PST file. You can convert multiple NSF files into PST by using the ‘Batch Conversion’ feature available in the Technician version of the software.

Key Features

NSF to PST Conversion with Direct Outlook Export

This NSF to PST conversion tool extracts mailbox items from NSF file into a PST file, which can be directly exported to Microsoft Outlook. The converted PST file contains the entire Lotus Notes mailbox items in their original form. NSF to PST converter software allows saving the converted file into a new or an existing PST file. Alternatively, the converted data can be appended to an existing Outlook profile. It also allows saving individual mails in EML or MSG format.

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Choose to Do -Full or Part Conversion of NSF to PST

The NSF to PST converter software from Stellar® allows to select and save all or specific Lotus Notes mailbox items in an Outlook PST file. You can select the mailbox items from a large list of converted NSF file items displayed in a tree format in the software preview window. Just expand the tree of converted items and select the items that need to be saved.
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Search for Specific NSF Files

NSF to PST Converter software allows searching for specific NSF files on a PC, which is a handy feature to find an NSF file in case the exact location of the file is unknown. The ‘Find’ option in the main interface of the software allows searching any folder, subfolder, or an entire volume in the computer to locate the Lotus Notes file.

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Previews Converted Mailbox items

The software shows a free preview of all the converted mailbox items, including Mails, Contacts, To Do lists, Calendars, Personal Journals, etc. in a three-pane window. You can click on any item to view its contents. Previewing the converted mailbox items helps to identify and extract all or specific items to be saved in a PST file.

More Awesome Features

Free Download to Convert NSF to Outlook

The demo version of the software allows free NSF to PST Conversion for up to 10 items per folder. Download the demo version, convert the file and check preview of the converted NSF file. After previewing the converted file, you can save 10 items per folder by clicking the ‘Save Converted File’ button. It will save the converted NSF file into PST format at the specified destination. Try the registered version of the software to save ALL items of the converted Lotus Notes mailbox.
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Advance Repair

Export NSF Mailbox Items to O365

Need to migrate from on-premises IBM Lotus Notes server to Microsoft Office365? Stellar Converter for NSF software saves time and effort required to export Lotus Notes mailbox items to Office 365. It allows to login to an Office 365 account and export the converted mailbox items directly to the account. The NSF to Office 365 export feature is available in the software Technician version.

Simple DIY Interface

Stellar Converter for NSF is a DIY software that helps users perform NSF to PST conversion without any technical assistance. The software features a simple interface that allows users to access every functionality in just a few steps; And, with detailed instructions at every step of the operation, the software ensures smooth and error-free conversion of NSF files to the equivalent PST files.

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Generates Log Report

The NSF to PST conversion software generates a detailed log report of the complete conversion process, which can be saved at a specified location. The generated Log Report includes the name of the NSF file, its location, file-size, start and finish time of the conversion process and the detailed status of the converted mail items. You can verify the number of converted items from the Log Report.
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Converts Multiple NSF files

The software can convert multiple NSF files into a single PST at one go with the help of ‘Batch Conversion’ feature. This is an incredibly useful feature if you have emails, contacts, journals, and notes saved in different NSF files. The ‘Batch Conversion’ feature is available in the software technician edition. The Technician version also allows to split converted PST file by ‘Size’ or ‘Date’.
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Advanced Filters for Precise Conversion

The NSF to Outlook PST converter software allows users to save selected emails in a PST file, by applying ‘Filter’ to the converted emails. Users can also import the data as per “Date Range” or exclude emails from particular email addresses by using the ‘Apply Filter’ feature.
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Export NSF to Different File Formats

The converted mail items folder can be saved in 5 different file formats such as MSG, EML, HTML, RTF, and PDF. To save the converted items— go to the preview pane, displayed after file conversion, and select the checkbox for items to be saved. A user can save all or selective mailbox items.
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Advance Repair

Compatible with Windows 10, Outlook 2019, and older versions

The Stellar Converter for NSF software is compatible with Windows 10, 8.1, 8, 7, and Vista. This allows several organizations and users to migrate from Lotus Notes to Outlook easily. Additionally, the NSF to Outlook converter software supports the latest IBM Lotus Notes versions 10.0.1, 9.0.1 till 6.0. It also supports Microsoft Outlook 2019, 2016, 2013, and older versions.

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What customers say about our Stellar Converter for NSF Software?

All in all, I am pleased with your customer service and the software worked very well. Your program was able to convert lotus notes files. I like the program and will use it again. Solved a problem that no other software could. Thank you

Philip Jenna

Was satisfied with this software support thank you!

Makr Nickols

I downloaded the trial version of Stellar Converter for NSF to get a full preview of mailboxes so I bought the software. I was able to convert lotus notes nsf file to pst. Thanks for your excellent customer support services. I'm completely satisfied.

Amelia Madison

Technical Specifications

About Product

Stellar Converter for NSF


Release Date

April, 2020


Single/Multiple Users

Version Support

IBM Lotus Notes 10.0.1, 9.0.1, 9.0, 8.5, 8.0.2, 7.0, 6.5 & 6.0


Corporate & Technician

End User License Agreement


Language Supported


System Requirements

Stellar Converter for NSF


Pentium Class

Operating System

Windows 10, 8.1, 8, 7


4 GB minimum (8 GB recommended)

Hard Disk

250 MB of Free Space

Download Guides


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*Free download allows to preview the converted file and save 10 items per folder.

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Knowledge Base & Guides

Product Related Articles

NSF to PST file conversion software allows you to save converted file in several formats like PST, MSG, EML, RTF, PDF & HTML file formats. Learn more
Use the Technician edition of the software to convert NSF file into Office 365. You will need Office 365 login details to perform the conversion. Learn more
Batch Conversion Module of Stellar Converter for NSF Technician edition allows users to convert multiple NSF files with the help of Batch feature. Learn more

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To convert IBM Lotus Notes NSF files to Outlook PST, follow the mentioned-below steps:

  • Launch the software Stellar Converter for NSF.
  • Select NSF file for conversion. Users can select multiple NSF files in a single attempt.
  • Once you have located the NSF file, then click on the ‘Convert’ button to start the conversion process.
  • Check the result in a preview mode.
  • In order to save the result, click on 'Save Converted File' from the File menu. Then, you will find different saving file format options.
  • Choose the desired file format to save converted NSF file data
  • Now, browse the destination path to save a newly created file and click ‘OK’.
  • All converted items are saved at the specified location.



With the free demo version of Stellar Converter for NSF utility, you can save only the first ten items of every converted file. In order to save all the converted items, you need to purchase the full version of the software.


Once the conversion process gets finished, all the converted mail items are listed in a tree structure. You can expand the tree and click on any item to see the preview on the right hand side pane of the interface.


After completion of the conversion process, the software (Technician version) lists all the mail items in the left pane of the interface in a tree view. Click 'Save' button on the File Menu, a dialog box will open from where you can choose the preferred saving option (Office365/ MSG/ EML/ RTF/ PDF/ HTML). The 'Destination path' window will open and you need to specify the target location, where you want to save the converted file. However, note that only a single mail can be saved as Office365/ MSG/ EML/ RTF/ PDF/ HTML file.


Yes, the software is fully compatible with latest Lotus Notes & MS Windows version.


You can easily convert large NSF file with the help of this software. There is an additional feature to convert and split NSF files by size which is available in the Technician version of the software.


Yes, the software allows the user to browse the location of NSF file. Click the Select NSF option and then select the NSF dialogue box. You will see the option ‘Browse’ in the dialogue box. With this option, you can find and locate NSF files in any folder, subfolder or an entire volume in your system.


You can convert multiple NSF files with Technician version of the software.


Yes, before performing the conversion using Stellar NSF to PST converter, you need to install Lotus Notes as well as Microsoft Outlook applications on your system.