If you wish to move your Lotus Notes NSF files into Outlook PST formats? Then this is an accurate spot for you. As here, you will get to know all the proper manual ways to convert NSF files into PST file formats. The given manual ways easily transfer the NSF files in PST files later the exported PST file will be imported into the Outlook. 

There are a huge number of organizations find email clients as a beneficial communication platform due to their interactive GUI. Lotus Notes email client becomes more complex as its GUI is very complicated. Users are rarely found to work with this email client as they get irritated while working with it. Also, with Lotus Notes, users are unable to use new features, they get bore with the old features of it. That’s why they want to switch to an email client like Outlook which has impressive GUI and more advanced features. 

The common email clients are both IBM Lotus Notes and Microsoft Outlook. NSF (Information Storage Facility) is a file extension used by Lotus Notes, and Microsoft Outlook uses PST (Personal Storage Table) as a file format. The users began switching Lotus Notes to Microsoft Outlook with the change in business requirements and the shift in market trend.

But this switching job is not easy. Since transferring them to their formats requires email migration from one email client to another. Not every email client works on the same network. Therefore, before you move them, you need to change the email format as per the new email client. And one such migration, i.e. from IBM Notes to MS Outlook where you have to convert NSF files into PST files of Outlook. Before going ahead, lets first you should know the main reasons for this migration. 

Appropriate Reasons for Lotus Notes to Outlook Migration:

These are the main factors due to which users want to migrate NSF to PST:

  • Outlook allows users to simultaneously set up multiple accounts.

  • Lotus Notes are less convenient to use than MS Outlook. 

  • Outlook is cheaper than the Lotus Notes.

  • Both fresher and experienced can use Outlook easily but it is difficult to use Lotus Notes for beginners. 

  • Moving to a new job can be difficult to use Lotus Notes than Outlook. 

By seeing the above reasons, you will easily understand why this migration is the best one. Now, let’s begin with the main motive of this blog which is the solution for this migration. 

How to Manually Convert NSF Files into PST Files using Simple Methods?

A free and simple method for the conversion of NSF into PST is given below. Until conducting the manual conversion, there is a need to have a backup copy of the original IBM Lotus Notes NSF file. As the file may become faulty during the conversion process. This method constitutes two phases:

Phase 1: Move NSF files from Lotus Notes into CSV file

Phase 2: Import the Exported CSV into MS Outlook

Phase 1: Move NSF files from Lotus Notes into CSV file

Use the below steps:

  1. Initially, launch the IBM Lotus Notes program which is installed in your system.

  2. Then, at the top label, press the File tab>> Open >> Lotus Notes Application.

  3. Search the necessary NSF file in the Open Application window, and click Open. The NSF file you selected is opened.

  4. Then press Export, in the File menu.

  5. In the dialog box Export, type the name of the file, the position of the file, and type saved.

  6. Now, for the file, utilize the Comma Separated Value(CSV) format.

  7. A CSV Export dialog box gets available. Choose the appropriate choices. Tap Ok.

  8. The data exported is saved in CSV file and stored in the specified location.

Phase 2: Import the Exported CSV into MS Outlook

Use the below steps:

  1. Firstly, start your MS Outlook program.

  2. Then, opt for the File menu given on the top, hit the Open & Export. After that, just tap the Import/Export.

  3. A dialog box with an Import and Export Wizard comes up. From the options pick Import from another program or file. Tap Next.

  4. Prefer Comma Separated Values as the type of file, and hit Next.

  5. Tap browse and pick the previously generated CSV file path using the Lotus Notes Export command. You can choose the choices that suit your needs.

  6. Pick the Outlook folder so that you can save your exported data and press Next.

  7. In the Import a file dialog box pick the checkbox provided and click Start. You can also adjust the location or map custom fields by tapping the same name options.

  8. Lastly, it will import the exported "CSV file" into "MS Outlook."

These manual methods have some flaws that a user may face. 

Manual Methods Flaws to Convert NSF to Outlook:

  • Time-consuming and unable to transfer entire data

  • A complicated and time-consuming process for beginners

  • Transforms only one NSF file at a time and makes the process long and repetitive

  • Could trigger corruption in the NSF file if not treated correctly

For certain cases, one can use the free NSF to PST Conversion Tool for direct conversion of NSF files into PST files. This utility is embedded with advanced algorithms and attractive GUI. So, use this straight-forward tool for direct conversion.


Here, all about the IBM Lotus and Outlook email clients are discussed with the reasons for conversion. Then clear methods to convert NSF files into PST are delivered with simple steps. A technical user can easily perform the above methods but it may become very difficult if you are a beginner. There are other flaws that a user may face as given above in this guide. But don’t worry, you can take help from the given utility for secure and quick conversion. The given conversion will help you in the safe technical world where you can use various Outlook features. Hope this guide gives you unknown and beneficial suggestions.