BitResQ » How to Convert MBOX to EML with Attachments – Free Methods

How to Convert MBOX to EML with Attachments – Free Methods

Shubham Dixit   
Published: Jul 17, 2023 • Convert • 5 Minutes Reading

There are many scenarios where a user needs a single email storing file like EML rather than a big file containing entire mailbox content like MBOX. But, due to the lack of knowledge, these users are stuck with mailbox files. That’s where our blogs/articles come in. In this article,  you will find detailed step-by-step instructions to convert MBOX to EML format.

As we all know, the MBOX file format allows for storing multiple files in a single file. It is a popular and secure file format that is supported by a variety of email applications like Thunderbird, Apple Mail, Eudora, and others.

The EML file, on the other hand, offers a number of distinctive features, including the ability to store individual emails while maintaining the email header metadata. EML files are also compatible with a wider range of email applications than MBOX files, including Microsoft Outlook, which supports the EML format.

User Query

Hi, I have a bunch of old MBOX files , and I want to export them all in EML files. My emails have important attachments that I want to preserve during the process. So I want only safe ideas. Please share methods that have worked for you.

Related Post: Best Free Methods to Convert MBOX File to PDF

Why Convert MBOX to EML File?

Each individual email is stored in its own file in EML, whereas MBOX creates a distinct file for each folder it includes in MBOX.

  • Many email clients that do not support MBOX give options to open and read EML files.
  • When users want to migrate to other email clients, they may require data in EML files.
  • It’s easier to share specific email messages from time to time by attaching the corresponding EML file. Thishis is not feasible while using the MBOX file format that contains complete mailbox data.

We’ll show you a variety of strategies for converting MBOX files to EML using various email clients.

You may also like to read: How to Convert Google Takeout Emails to PDF

Method 1: Convert MBOX to EML Using Mozilla Thunderbird

In this article, we will teach you how to export MBOX emails to EML using Thunderbird. All the steps are listed below:

I. Preparations:

  1. To export MBOX to EML, open Thunderbird on your system.
  2. Next, go to “Ads-ons and themes” and type “ImportExportTools” into the search field.
  3. Go to “ImportExportTools NG” and click Add to Thunderbird >> Add.
  4. Quit Thunderbird after installing the add-on.

II. Step-by-Step Instructions:

  1. On your system, open the Thunderbird email client.
  2. Right-click on the MBOX folder that you want to convert into EML files.
  3. Select “ImportExportTools NG” from the drop-down menu.
  4. Select Export all messages in the folder >> EML format from the drop-down menu.Convert MBOX Files to EML
  5. Finally, browse the location where you want to save the EML file and click the “Save” button.


  • You must have Mozilla Thunderbird installed and configured on your system to perform this method.
  • Plus, you also need to import MBOX file to Thunderbird beforehand.

Method 2: Convert Emails on Mac using Apple Mail

  1. To convert MBOX files to EML on Mac, open Apple Mail app.
  2. Select the relevant email from your mailbox.
  3. Then, on the desktop screen, drag and drop the email.
  4. You should now see an EML file on your screen.


  • You must have a Mac system with a configured email account in Apple Mail.
  • Plus, you may need to import MBOX file to Apple Mail beforehand.
  • Also, you’ll have to repeat the process for each email.

Professional Method to Convert MBOX to EML with Attachments

As you can see, there are two manual techniques to convert MBOX files to EML for free. Although there are certain restrictions that have already been discussed. However, these approaches will only work if you have an email client that supports MBOX files.

If you only have MBOX file(s) and not a single MBOX-compatible email client installed on your device, you won’t be able to export MBOX emails to EML.

As a result, you will need to employ a professional solution such as BitResQ MBOX Converter Software to deal with orphaned MBOX files. This allows you to directly export all your MBOX emails to EML format without the need for an email client. Plus, you get to keep all your attachments even after conversion. Expert and non-technical users alike will appreciate the tool’s user-friendly design.

For Windows

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For Mac

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Steps to Export MBOX Files to EML on Windows

  • Start the converter on your system. Click on “Select Files” and select the MBOX files that you want to convert to EML format.
  • After viewing all the added files, select “EML” as the saving option and apply different settings on the source file.
  • Finally, click the “Convert” button to start exporting the mailbox files.

On Mac –


Converting MBOX to EML is an easy task. All you need is the knowledge of the email clients used to accomplish this task. As long as the MBOX file is associated with Thunderbird or Apple Mail, the free methods can be used without any issues. But for orphan MBOX files, the best method is to opt for professional solution. It will easily export all your MBOX emails into EML files with attachments.