Switching from one email client to another is one of the most common things among organizations and individuals. As, the popularity of digital world is increasing there are multiple options available for the exchange of information. Lotus Notes and Outlook, are two such platforms. At times, users things how to import lotus notes NSF file to Outlook? due to professional need. However, apart from this reason there are some other reasons to convert NSF file to PST format. In this article, we will discuss the need, free and automatic way to import lotus notes .nsf file to Outlook PST.

Major Needs to Transfer Lotus Notes to Outlook?

One of the biggest reasons to convert NSF to PST is the vulnerable nature of Lotus Notes NSF files. These files can easily be corrupted due to various reasons. Some of the causes of NSF files corruption is virus attack, sudden shutdown of the system due to power failure, file header corruption, etc. Once the NSF file is corrupted or damaged users get some errors like Unable to open Name and Address Book(-names .nsf), File does not exist, Your current ID does not specify an internet certificate for signing etc. Apart from this reason there are some more reasons as mentioned below to migrate Lotus Notes NSF file to Outlook PST format:

  • Outlook provides the option to access the data offline
  • Outlook gives better security options and data management
  • Maintenance cost of Outlook is less and is more user-friendly
  • Sharing of data is easy in Outlook

The need to move Lotus Notes email to Outlook will be clearer by the mentioned query taken from the forum site:

“I am using IBM Lotus Notes from a very long time. Now, I have started a business in partnership with my friend and we have decided to use Outlook due to the vulnerability of NSF files. I have some previous data in Lotus Notes. So, I want to know that how to convert Lotus Notes to Outlook?”

Methods to Import NSF to Outlook PST

To access NSF files in Outlook, users need to export NSF Files into PST format. We have discussed two methods for the migration of NSF files:

Method 1: Manual way

You need to first export Lotus Notes NSF file and then import that exported NSF file in Outlook

Stage One: Export Lotus Notes NSF File

  • Firstly, open Lotus Notes and then, open NSF database file
  • Now, click on “File” and then to “Export”
  • Choose the location where you want to save the exported file
  • A dialog box will pop-up, there you need to mark the required option and then select “OK”
  • In the final step of exportation, type in a new name for the NSF file and click on “Export” button

Stage Two: Import Exported NSF File in Outlook

  • Open Outlook and then, click on File >> Import
  • Choose “import from another program or file” and click on “Next”
  • You need to choose Comma Separated values
  • After this, you need to browse to the location of exported lotus notes files. You can check replace duplicates with items
  • Now, to import data you need to select a desired folder and click on “Next”
  • Once you done that, the process would be over and you can access NSF files in Outlook

Limitation: This manual method has some limitation like

  • It is a lengthy and time consuming method
  • There is risk of data loss during the process
  • Transfer of large amount of NSF data cannot be done

Method 2: Automatic Way

For easy migration of Lotus Notes to Outlook users can use a tool namely Lotus Notes NSF To PST Converter. This software exports all emails, calendars, contacts, etc from NSF to PST. The utility requires installation of Outlook and has the ability to create PST file if NSF size exceeds 20 GB.Lotus Notes to PST Converter maintains the integrity of data throughout the process. This is how you can use this software for the conversion:

Step 1: Download and Run Tool

  • Click on “Start” menu, then to “All Programs” and finally on “Export Notes”

Step 2: Browse and Open NSF File

  • Now, you need to click on “Browse” the NSF file you want to convert
  • You click on the below option if you want to convert “names.nsf” file
  • After this, Select the NSF file and then click on “Open”

Step 3: Option to Transfer Contacts into Single File

  • If you want to migrate Lotus Notes contacts into an individual PST file then choose “Migrate contacts into single PST file” option

Step 4: Select Categories and Apply

  • You need to select that folder you want to export and select “Apply” button
  • Once you done that, you will see an option to choose “Categories”. Select the categories as per the choice. After this click on “Apply filter”

Step 5: Include Filter Data

  • You can filter the categories as per your requirements.
  • While converting, to remove duplicate contacts choose “Exclude Duplicates Contacts” and then, click on “Set”

Step 6: Advance Settings and Split PST

  • You can also go to the option of “Advance Settings” and make choices as you required.
  • Once you done that, you can go for the option of “Split PST” for large Outlook data files

Step 7: Choose location and Exported

  • You can choose the desired location and after that click on “Export”
  • Save the exported file by clicking on “Save”
  • At the end you will see a folder report


Sometimes migration is necessary to maintain the continuity of the work. In the following section, we have discussed the need of the migration. We have also learned How to import lotus notes NSF file to Outlook? Users can use either of the method convert Lotus Notes NSF file to PST.

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Diptesh Kumar Bhakat is proud to be the author of fastest growing tech blogs. He is a tech-savvy, SEO Expert, SMO Expert, SMM Specialist and a professional Blogger. Except blogging, he is so much found in photography, superbike riding. He has a very close attachment to the tech world and loves to blog on his fav topics. He has also contributed to many regional dailies and authored guest posts on some of the leading tech blogs. Professionally, he is a tech blogger and reviewer. he is a very energetic person who constantly puts up an evil smile to counter any obstacle in his manner. This dude is highly unpredictable and in reality, you can’t recognize what’s coming from him…be it his articles, generating an aura, or his personality. Mr. Diptesh is completed his B.Tech in Mechanical Engineering, as everybody thinks about one question that how a mechanical engineer can make a website?? Is it strange!!!!!!!! Yes it is. But there is a big story we will update soon.


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