How to Open MBOX Files in Microsoft Outlook?

Do you want to know how to open MBOX files in Outlook? If yes, then continue reading this informative article. While it is known that it is not possible to open an MBOX file directly with Outlook due to compatibility, we have broken down all the possible ways that make it possible. So, let’s get started.

You can make it possible to open MBOX file in Outlook, all you need to use is the Thunderbird account. Thunderbird is the account that supports MBOX files, hence we can use this account to convert MBOX files to Outlook compatible file format. On is the account that supports file types such as EML and PST.

Both the Outlook and Thunderbird email clients make use of the EML file format. After you export EML files from Thunderbird, you might be able to import them into your Outlook account. You will be able to open MBOX files in Outlook considerably faster if you do this.

How to Open MBOX Files in Microsoft Thunderbird?

The first step in opening MBOX files in Outlook is to use the Thunderbird account to export MBOX as EML files. You may install Add-on in Thunderbird account with Import/Export Tool. Follow the steps listed below to learn what you need to accomplish.

Export MBOX from Thunderbird as EML files

ImportExportTools is a free add-on that is available to the majority of Mozilla Thunderbird users. This add-on is often used in Thunderbird to carry out a number of tasks. ImportExportTools must be installed on your computer before using this free add-on.

Install ImportExportTools in the Thunderbird:

  1. Click Tool and then go to utilities to select Add-ons menu.
  2. Go to the gear symbol in the menu bar and open the settings menu.
  3. Find the importexporttools-3.3.0-sm+tb.xpi file in the Download Folder
  4. Click the Install Now button and select the Restart Now option.

Export MBOX Files from Thunderbird to EML format with Add-On

  1. Launch Mozilla Thunderbird. Click “Open” and select the folder’s path.
  2. Find the ImportExportTools menu item after selecting the folder.
  3. After making a duplicate of each chat, turn it into an EML file.
  4. Select a location to store your converted EML files, click the Select Folder button.

The MBOX emails will all be converted to EML in a few moments. You cannot open MBOX files in Outlook at the moment. You must adhere to these guidelines for this to be effective.

How to Add an EML file to Outlook account?

  1. Open the Microsoft Outlook application that is already installed on your computer.
  2. By going to the place where the EML files are saved and clicking on the folder’s icon, you may access the storage folder.
  3. EML files may be imported into Microsoft Outlook by simply dragging them into the “mailbox” folder.
  4. Every additional folder that includes EML files must go through this procedure.
  5. The new capability added to Outlook makes it simple to open and explore EML files.

If you find the manual approach to be lengthy and time consuming, you might want to consider the direct approach, which is discussed below.

How to Open MBOX File Directly into Outlook 2019, 2016?

One of the best and easiest ways to open MBOX file in Microsoft Outlook is MBOX converter. The application does not involve using Thunderbird or any other email client. It is self-sufficient and can directly convert MBOX files to PST format. It is efficient and can convert any number of files in a single process.

This software is all-in-one and can convert MBOX files no matter which account they were extracted from. It can convert Google Takeout files, ProtonMail MBOX files etc.


We have offered you to best ways to open MBOX file in Microsoft Outlook. You may use the Thunderbird email client to convert MBOX files to EML and import them into Outlook. Alternatively, you can use the smart software to directly convert any number of MBOX files to EML or PST and directly import them into Outlook.

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