02 Simple Methods to Convert Lotus Notes NSF file into MBOX format

Summary: This article explains the best ways to convert Lotus Notes NSF files to MBOX with authenticity while maintaining data integrity. We will describe manual and professional solutions to export NSF to MBOX. Where you can perform manual methods using Thunderbird. Furthermore, the automated approach consists of the best NSF to MBOX Converter which can directly convert an NSF file into MBOX. Download Now  Purchase Now

What is Lotus Notes?

Lotus Notes is an established email client which is used by many organisations as a primary email program. It is also known as HCL Notes, which stores data, like emails, contacts, calendars, etc., in a file named NSF. However, many individuals and businesses avoid this email client because of its complex user interface and require technical expertise.

What is a MBOX File?

MBOX is a standard file format supported by many email clients such as AppleMail, Thunderbird, SeaMonkey, and many more. So you can easily share this type of file due to its wide compatibility. Whereas NSF files can only be opened by Lotus Notes, which creates many hurdles in user productivity. That is why users are shifting from HCL Notes to other email clients like MS Outlook, Mozilla Thunderbird, Apple Mail, etc. So let’s move ahead to learn the procedure to convert Lotus NSF to MBOX free.

Finest Methods to Convert Lotus Notes NSF Files to MBOX

Well, if you are looking for a direct method to save NSF file data into an MBOX file, then we hate to inform you that there are no direct manual methods. But don’t worry, we will describe an indirect solution that can do this job successfully. So let’s get started without any delay.

Method 1: Convert NSF Files to MBOX Using Thunderbird

This method is divided into two parts, where first you have to export an NSF file to EML, then later import it into Thunderbird to convert to MBOX file format. Therefore, let’s move forward to see the working steps to perform NSF to MBOX conversion process.

Step 1: Export NSF files into EML File Format

Lotus Notes provides an option of Save As to convert NSF files into EML, through this feature, we can easily save NSF to EML.

  1. Open HCL Notes
  2. Choose the email you require to export.
  3. Then, go to File >> Save As.
  4. Set a destination to save the resultant file.
  5. Select EML from the drop-down menu in the Save As section.
  6. Finally, click on the Save button to finish the process.

Step 2: Import the EML file into Thunderbird using Drag & Drop

Now, in this step, we will import the newly saved EML file into Thunderbird using the drag-and-drop method, so let’s continue.

  1. Login to your Mozilla Thunderbird account.
  2. Open the Local folders, right-click on it, and select the New folder option.
  3. Assign a name to the created folder and click OK.
  4. Click on that folder and then locate the EML you want to import.
  5. Now, drag the selected EML file and drop it into the newly created folder.

These are all the steps that you need to follow to convert NSF to MBOX. However, as you can see this procedure is quite lengthy and complicated and you are required to have the technical expertise to rightly perform the above process. Moreover, if you made a mistake while performing, then you might lose your data during the process. Worry not, there is an automated solution that exports any NSF file directly to MBOX file with 100% data integrity and security.

Method 2: Convert Lotus Notes NSF Files to MBOX Using Third Party Solution

NSF to MBOX Converter Tool is the ultimate software that allows you to convert NSF files directly to MBOX while maintaining data integrity and hierarchy. This software is based on an advanced algorithm that converts NSF files to PDF, EML, EMLX, MBOX, TXT, HTML, MHTML, etc., without any other application. Additionally, it has the best user-friendly interface, which helps users in a smooth and straightforward conversion of NSF files.

Step-by-Step Guide to Convert NSF to MBOX

  1. Download and Run the NSF to MBOX Converter Tool.
  2. Choose File or Folder to browse the NSF file from your system.
  3. Now, you can see all the folders in a tree structure, check the required folders, preview them, and click Next.
  4. Select MBOX from the left side of the software as your saving option.
  5. Set a destination to save the resultant file by clicking the Select Path button.
  6. Finally, click on the Convert button to start the conversion process.


Through the above write-up, we have explained the methods to convert Lotus Notes NSF files to MBOX. It consists of manual and professional methods that are efficient enough to export any NSF file into MBOX. However, the manual procedure is lengthy and can’t convert NSF files directly into MBOX. Whereas the automated solution can directly convert your NSF files in bulk with authenticity and 100% security.

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About The Author:

Anshuman Singh is a Technical Content Writer at Data Conversion Tool. He is a Tech enthusiast, in Data Recovery, IoT, Artificial Intelligence, and the Robotics technology domain. He loves to writes about latest technology and software updates.

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