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Summary:- Nowadays, selecting an appropriate email client between Lotus Notes and Outlook is complex. Both Mail clients are safe and most popular among users to manage their personal and professional information. However, users sometimes want to convert Lotus Notes archive to Outlook PST. These email clients connect the corporate and non-corporate worlds alike. This technical guide will describe the Outlook needs over Lotus Notes and the best methods to move Lotus Notes emails into Outlook accounts.

Lotus Notes & MS Outlook- Overview

Lotus Notes is an enterprise email software by IBM. It provides options to its users for managing emails, calendars, tasks, address book, file sharing, instant messaging, user directory, microblogging, and more.

On the other hand, MS Outlook is a personal information management application that allows users to receive, send, and store electronic messages. It is a Microsoft Office suite product that one can easily buy separately as single software.

Why Need Lotus Notes Archive to Outlook PST?

Several reasons lead to the need to convert NSF to Outlook PST. Here we will discuss the various parameters of email clients that make a difference between Lotus Notes and Microsoft Outlook.

  • Outlook comes up with suites of Microsoft applications; even so, Lotus Notes is a standalone application that needs to be purchased.
  • Outlook allows users to configure multiple accounts simultaneously.
  • Outlook is most popular and cost-effective in comparison to Lotus Notes.
  • Outlook is easily accessible and takes low cost in maintenance when compared to Lotus Notes.
  • Outlook allows its users to manage it offline, whereas Notes does not.  
  • Outlook offers better security as Microsoft manages it, users trust it more.
  • Job switch is another reason as the new workplace may have Outlook as an email client.
  • Outlook provides an easy-to-use interface to its users.

How to Convert Lotus Notes Archive to Outlook PST?

There are different methods to convert Lotus Notes to Outlook PST file format. Out of which, we discuss the two best solutions to import NSF files into Outlook. The manual method to convert NSF files into PST files gets performed in two parts:

Steps to Export NSF Files to CSV

Follow the steps to export NSF files from Lotus Notes to Outlook PST:

  1. Start IBM Lotus Notes on your system.
  2. Now, click on the File tab and opt for the Open.
  3. Then go to the Lotus Notes Application.
  4. Browse for the required NSF file in the Open Application window and click Open. Further, the selected NSF file gets opened.
  5. Now, go to the File menu and click Export.
  6. Enter the file name, file location, and saving type in the Export dialogue wizard.
  7. Choose the Comma Separated Value format for the file.
  8. A tab pop-ups on your screen; choose the required options from How much to export, Export Character Set, and Detail to Incorporate sections. Click OK. 
  9. The exported data gets saved in the CSV file in the defined path.

Steps to Import CSV File into Outlook

Steps to Import the Intermediate CSV file into MS Outlook:

  1. Start MS Outlook on your computer.
  2. Click on the File tab and opt for the Open & Export section in the left panel.
  3. Choose Import/Export from the displaying list.
  4. An Import and Export Wizard pop-ups on your screen; choose Import from another program or file from the options and Click Next.
  5. Select Comma Separated Values as file type and click the Next button.
  6. Click on the Browse button and select the path for the CSV file.
  7. You can select the options according to your need for duplicates. Click Next.
  8. Select the Outlook folder to save your exported data and tap the Next button.
  9. Check the checkbox in the Import a file dialogue box.
  10. You can also change your saving directory or map custom fields by clicking on the same name options.
  11. Click on the Finish button to complete the process.
  12. Finally, the CSV file gets imported into Microsoft Outlook.

Limitation of the NSF to PST Conversion

The free NSF to PST conversion method allows you to transfer limited mailbox items. Moreover, it also has some other limitations, that are listed below:

  • The process is complicated and challenging for novice users.
  • Sometimes, the conversion work takes more time than the actual one.
  • Always, there is a possibility of error in steps.
  • Also, the chances of corruption due to large NSF files.
  • You can not perform the selective conversion.
  • It allows you to convert only one NSF file at a time.

An Alternate Solution to Convert Lotus Notes Archive to Outlook PST

Sysinfo NSF to PST Converter is the best Lotus Notes conversion tool that allows users to convert the NSF files into Outlook PST format. The software is competent enough to quickly move all the mailbox items of NSF files into PST file format. Moreover, the software provides you with a demo version to analyze the work and performance of the software.

Why Choose this Free NSF to PST Converter Tool?

  • Allows converting multiple Lotus Notes NSF files into Outlook PST.
  • Preview of the added NSF files before conversion.
  • Convert NSF to PST and other saving formats like EML, MBOX, MSG, CSV, PDF, DOC, etc.
  • You can also Import NSF files into Gmail, Office 365, Thunderbird, AOL, etc.
  • Have a feature to remove duplicate emails from the selected NSF files.
  • Capable enough to exclude encryption from the Lotus Notes NSF files.


You have to use the free best method to convert Lotus Notes archive to Outlook PST. However, if you cannot perform the process manually, you can also go through with a third-party solution.


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