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Here’s How to Open MBOX file in Outlook Email Application

Published On January 31st, 2024 • 5 Min Read

Welcome to the easy guide on how to open MBOX file in Outlook?. In this article, we’ll show you the simple steps to access MBOX files via Outlook application securely. We’ll break down the process, making it easy to understand. We’ll cover top ways to do this task so make sure you are reading the complete article. Let’s start reading this informative and easy guide.

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Try Free Online MBOX File Viewer to open MBOX files in seconds.

When a User Needs to Open MBOX File in Outlook?

A user typically needs to view MBOX file in Outlook when they want to access their MBOX data within MS Outlook. A few common scenarios are:

  • The user might be switching from the email clients that support .mbox file format such as Thunderbird to Outlook.
  • Migrate their data from .mbox file to MS Outlook email applications.
  • Outlook is a popular email client, opening MBOX in Outlook allows making MBOX files widely compatible.
  • Outlook has a plethora of collaborative features for which opening an MBOX file in Outlook becomes necessary.

How to Open MBOX file in Outlook?

You have two ways to open MBOX file with Outlook: either do it manually or use a free online tool. The online tool is easier and safer, saving you time and effort compared to the manual method, which can be a bit complicated.

View MBOX file in Outlook Manually

Prerequisites: If you’re doing it manually, start by setting up your Gmail in Thunderbird using IMAP. Then, add the .mbox files to Thunderbird and open it in Outlook. If this seems confusing, you can use the free online tool to open MBOX file in Outlook we mention below for help.

Part 1: Add the MBOX file to Thunderbird

  1. Launch the Thunderbird application on your computer.
  2. Configure your Gmail account with your Thunderbird account.
  3. Go to Tools from the Thunderbird screen and install ImportExportTools NG.
  4. Then Select ImportExportTools NG and Browse .MBOX file from computer.

Part 2: Open MBOX file in Outlook

  1. Open the Outlook application and click on File Tab.
  2. Select Add Account options and enter your Gmail login details along with server details.
  3. Let Outlook verify your account and then finally click the Finish button.
  4. You have successfully open MBOX files in Outlook.

Limitations of Manual Method:

  • The manual method involves several steps, including configurations of Gmail with Thunderbird, installing add-ons, then opening .MBOX in Outlook which is challenging for non-technical users.
  • Due to the multiple steps, there is a high chance of making mistakes during the manual process. Incorrect configurations or missed steps can cause errors.
  • The manual method requires extra time and effort in comparison to online tools. Users can find it time-consuming, especially when they need to open MBOX file in Outlook in bulk.
  • Considering these limitations, users should prefer the simpler and more user-friendly option which is possible by using the free tool mentioned here to view MBOX file in Outlook smoothly.

Note: We have also found software on Google which is specially built to Open MBOX files on Outlook named SysTools MBOX File Converter. You can try the software by visiting its official site.

SysTools MBOX Converter

Quick Solution to Open MBOX file in Outlook for Free

If you’re having trouble to open your EML files in Outlook with manual ways, the best solution is to use the free Online MBOX Viewer. It’s a safe and secure platform that lets you preview both single and multiple MBOX files right in your web browser.

Open and Read MBOX Files with 3 Quick Steps

To open your MBOX files in Outlook, follow these three easy steps:

  1. Click “Browse” to choose MBOX files from computer or simply use Drag & Drop option.
  2. Click on “Preview Message” to see what’s inside your MBOX files.
  3. Simply scroll down to view all your .mbox data. That’s it!

Benefit of Using the Online Tool to Open MBOX File:

  • You can access your .mbox files directly from your web browser without having to download any additional application.
  • This online free tool works on all operating systems (Windows, Mac, Linux & Ubuntu) as long as you have internet access.
  • It’s super easy to use with a friendly interface. You don’t require any technical expertise.
  • You can instantly view and open all your MBOX files in the web browser. No need for installations or downloads.
  • You have full access to your attachments. You can view and download any attachments that are included in your MBOX files.


In this easy guide, we’ve simplified the process to open MBOX file in Outlook. Consider the limitations of the manual approach to view MBOX files in Outlook and try for the hassle-free online free to view and open .mbox files effortlessly. Follow the three simple steps mentioned above for quick results.