How to Open NSF file in Thunderbird?

Rollins Duke   
Published: May 13th, 2024 • 5 Min Read
Summary: Hassled with the manual solutions to open NSF file in Thunderbird application? Are you looking to read NSF files in Thunderbird format? Don’t panic! Read this entire blog to know a proper approach How you can view Lotus Notes NSF files in Thunderbird?

Lotus Notes is widely used by numerous organizations to do collective work like instant messaging, calendars, to-do lists, contacts address book management, scheduling meetings, etc. It is a server-based emailing application that individuals prefer to open and read their emails in offline mode. This Lotus Noes application creates a separate NSF file for each profile for storing the data associated with it. Besides Lotus Notes, multiple email clients like Thunderbird is also utilized to access emails in offline mode. Recently our technical team received a query where the user was stuck while trying to open NSF file in Thunderbird.

Hi, I have 50 NSF files and I want to open NSF file in Thunderbird utility. The manual solutions to read NSF files in Thunderbird are really troublesome. I don’t want to waste my valuable time in clicking each file one by one for conversion. Can someone suggest me a direct solution using which I can open NSF file in Thunderbird. Your help will be appreciated!

-Robin, Germany

This blog explains a wholesome guide to view Lotus Notes NSF to Thunderbird. For this, the BitRecover NSF Converter is the most preferred choice. This software will provide the simplest and safe solution to open NSF file in Thunderbird with all associated attachments. In the following section, we will explain step-by-step how to Open Lotus Notes NSF files in Thunderbird.
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How to Open Lotus Notes NSF Files in Mozilla Thunderbird ?

How to Open NSF Files in Thunderbird ?

Follow these steps to open Lotus Notes NSF files in Thunderbird.

  • Step1: Download and Run NSF Converter on Windows OS.
  • Step2: Browse multiple NSF email folders from your database.
  • Step3: Select Thunderbird as a file saving format from the options.
  • Step4: Enter a final saving path for NSF to Thunderbird converted data.
  • Step5: Press on the Convert tab to start to open NSF files in Thunderbird.

How to Read NSF File in Mozilla Thunderbird ? – Stepwise Solution

In order to open NSF file in Thunderbird, you should first configure Lotus Notes properly on your Windows machine. Then, you can go through these steps one by one to read NSF files in Thunderbird.

Firstly, download the setup file of the software on any Windows-compatible machine. Install and run it properly.


Now, browse single or multiple NSF email folders from the database. This can be done in two ways:

Add Files: Enables to choose single NSF files to start conversion.
Add Folder: Enables to choose entire folder consisting of NSF data all at once.


This ends the first phase of how to Open NSF file in Thunderbird.

Once you have chosen Lotus Notes NSF files, now the software will automatically fetch all the data from NSF files and folders to the software panel. Check the preview of desired NSF emails by enabling the checkboxes.


The software provides multiple file saving options. Choose Thunderbird as file saving option from the utility.


Afterward, choose a location for saving the resultant NSF to Thunderbird converted data.


Now, hit on the Convert tab to start NSF to Thunderbird conversion. Once you have done the conversion, the tool will flash a completion message at the end.


When you will press on the OK tab, it will open the default location where all your converted files are saved.


Lastly, open the Mozilla Thunderbird application to see the output.


View Lotus Notes Archive File in Thunderbird – Prime Features

View NSF Files in Thunderbird in Batch: The Add Folder feature of this software is very useful to read NSF files in Mozilla Thunderbird in batch mode.

Preserves all components of NSF files: The software retains all email items during NSF to Thunderbird conversion such as attachments, Subject, From, CC, BCC, TO, Text formatting, images, headers, etc.

Compatible with all IBM Notes versions: This utility can open NSF files in Thunderbird from all editions of IBM Notes (10.0, 9.0, 8.5, 8.0, 7.0, 6.5, 6.0, 5.0, 4.5, 4.0, 3.0, 2.0, 1.0, etc).

Freedom to choose destination location: The tool offers the facility to save NSF to Thunderbird file data at a selective destination path as per user’s choice.

Supports all Windows OS: You can complete this process of opening Lotus Notes NSF files in Thunderbird on all Windows OS (Win 10, 8.1, 8, 7, XP, Vista, 98, 97, 2000, etc).

Free demo version to evaluate tool: This software comes with a free demo edition which can be used for testing purpose. It permits to export 25 items from each NSF folder to Thunderbird.

Final Words

The above write-up explained “How to Open NSF File in Thunderbird” using some simple steps. With NSF Conversion utility, the whole conversion from IBM Notes to Thunderbird can be accomplished in a swift manner. The tool has a well-interactive GUI so the users can preview NSF in Mozilla Thunderbird without any technical guidance. If you still have any queries regarding How to open Lotus Notes NSF files in Thunderbird, do contact to our technical team.