NSF to PST Converter to convert NSF file to PST

Stellar Converter for NSF Powerful Software widely recommended by Administrators & Experts worldwide to convert Lotus Notes mailbox items to Outlook PST format. Exports all mailbox items — emails, attachments, contacts, calendar, and journals.

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

  • Free NSF to PST conversion for up to 10 items per folder
  • Supports Lotus Notes 10.0.1, 9.0.1, 9.0, 8.5, 8.0.2, 7.0, 6.5 and 6.0 versions
  • Supports Microsoft Office 2019, 2016, 2013, 2010, 2007, and 2003
  • Converts multiple NSF files to PSTs  (Tech Version)
  • Saves converted files in office 365, MSG, EML, RTF, PDF, & HTML  (Tech Version)

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

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Why Do We Need NSF to PST Converter?

Stellar NSF converter software can convert IBM Notes NSF file data – mails, attachments, contacts, calendar, to-do lists, journals,etc.–to Outlook PST file format. It efficiently and quickly converts NSF mailbox items to Outlook PST format in a few simple clicks, while preserving the original data format. The software allows to convert and save specific or entire mailbox data to a new or an existing PST file, or can directly export the mailboxes to Office 365. Also, Stellar Converter for NSF saves significant time by allowing batch conversion of multiple NSF files to PST files.

Key Features

NSF to PST Conversion with Direct Outlook Export icon

NSF to PST Conversion with Direct Outlook Export

Converts the selected Lotus Notes 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 intact form. NSF to PST converter software allows to save the converted files in PST format. Alternatively, the converted data can also be appended to an existing Outlook profile. You can also save data in to New or Existing PST.

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

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

The NSF to PST Converter also allows to select and save specific items from the long list of converted mail items tree. Just expand the tree of converted items and select only those items that need to be saved. It also allows to save individual mails in EML or MSG files. Read More

Search for Specific NSF Files icon

Search for Specific NSF Files

The NSF to PST Converter also allows to search and find NSF files on a PC, in case the exact location of the file is not known. The ‘Find’ function allows to search any folder, subfolder or an entire volume in the computer system, to locate the NSF file.

Previews the Converted Mailbox items icon

Previews the Converted Mailbox items

The software displays free preview of all the converted mailbox items —Mails, Contacts, To Do list, Calendars, Personal Journal etc.— in a three-pane window to help verify the data integrity. The users can then choose to convert all or selected items through the three-pane preview.

Additional Advantages

Free Download to Convert NSF to Outlook icon

Free Download to Convert NSF to Outlook

The software does free NSF to PST Conversion for up to 10 items per folder. Download the Free version of the software and – after the conversion is complete–- check preview of the converted NSF file. To save the free 10 items per folder, you just need to click on ‘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. Read More

Converts ALL Mailbox Items with Direct O365 Export icon

Converts ALL Mailbox Items with Direct O365 Export

Need to migrate from on-premises IBM Lotus Notes server to Microsoft Office365? Stellar Converter for NSF Technician Version allows the users to directly export the converted NSF file to Office 365. To export the converted mailbox to Office 365, just add Office 365 login Credentials. Try Technician version

Simple DIY Interface  icon

Simple DIY Interface

The DIY software offers a simple interface to access and every functionality in just a few steps. And, with detailed instructions at every step of operation, the software ensures that the mailbox conversion process is smooth and users can convert the NSF files to the equivalent PST files, without any assistance.

Generates Log Report  icon

Generates Log Report

NSF to PST conversion software generates detailed log report of the complete conversion process, which can be saved at a specified location. The generated Log Report includes name of the NSF file, its location, and 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. Read More

Converts Multiple NSF files  icon

Converts Multiple NSF files

The software allows the user to select multiple NSF files and save them to a single PST after conversion. This is an incredibly useful feature if you have emails, contacts, journals, and notes saved in different NSF files. The Technician version of the software further expands the conversion utility by offering batch conversion of multiple NSF files into PST files. Best part is that further you can split converted PST file by ‘Size’ or ‘Date’. Read More

Advanced filters for precise conversion  icon

Advanced filters for precise conversion

The NSF to Outlook PST converter software allows users to save the selected emails by applying ‘Filter’ to the converted emails. Users can also import the data as per “Date Range” or exclude emails from particular email addresses. Read More

Export NSF to Different file formats  icon

Export NSF to Different file formats

The Software also allows to save the mail items folder in 5 different file formats viz. MSG, EML, HTML, RTF, & PDF. To save the converted items— go to the preview pane, displayed after file conversion, and select the checkbox for items to be saved. It is entirely at user’s discretion to save all or selective mailbox items. Read More

Compatible with Windows 10, Outlook 2019, and older versions icon

Compatible with Windows 10, Outlook 2019, and older versions

The Stellar software is compatible with the latest Windows 10, 8.1, 8, 7, and Windows Vista. This allows a wide set of organizations and users to migrate easily from Lotus Notes to Outlook. Additionally, the software also 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.

Try Stellar Converter for NSF for Fast and Safe Conversion

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

Software Specifications

System Requirement

ProcessorPentium Class

Operating System Windows 10, 8.1, 8, 7 & Vista

Memory4 GB Minimum

Hard Disk250 MB of Free Space

Software Delivery


License & Version

Single User LicenseCan use only on a single system

Technician LicenseMultiple Users


Interface Available

Language SupportedEnglish



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.


The software can be activated, only after purchasing the software and receiving the 'Serial Key'. Steps to Activate the Software from the Demo Version:

  • Run the demo version of the software and click 'Activation' > 'Activate Stellar NSF To PST Converter'
  • A dialog box opens. Provide the 'User Name', 'Activation Code' and click 'OK'.
  • If the key is valid, a confirmation message is displayed. Click 'OK' to finish the activation process.

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.


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

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