Home » Blog » How To » How to Convert EML Files to MBOX Format in Bulk?

How to Convert EML Files to MBOX Format in Bulk?

Published By Jamie Kaler 
Rollins Duke
Approved By Rollins Duke
Published On October 30th, 2023
Reading Time 7 Min Read

Summary: In this article, get to know about how to convert EML files to MBOX format. If you are one of those who have the same issues. And want to know the best solution to combine multiple EML files into a single MBOX file. Then read this post completely. Here, we explain the complete working process of an amazing EML to MBOX Converter software. So, read the write-up and get your solution.

An EML document adopted by many email programs, it is a file format commonly used by a large number of email clients. It saves email messages exclusively and includes source and beneficiary data such as date, subject, etc.

On the other side, MBOX is also an email storage format. It is a single file that contains multiple emails or EML files. It would not be wrong to say that MBOX is a briefcase of many EML files. But MBOX files must be opened by specific applications. MBOX file stores individual email messages as plain messages in a single record.

As we all know EML and MBOX files are supported by a large number of email clients. There are many reasons for a user to convert EML to MBOX file format. Thus, to give you a quick overview of the need for EML File to MBOX conversion, we have mentioned some of the real-time scenarios. Let’s check them out.

Top Queries to Convert EML Files to MBOX Format

“I have lots of EML Files, but due to a change in my job environment suddenly I have to need for exporting my entire EML Files into MBOX. But the problem here is, How to convert EML to MBOX in an easy way. I tried many solutions but I didn’t get any satisfactory results. So, if you have any reliable lead for EML to MBOX converter please let me know.”

“I failed to specify that all the e-mails are on a flash drive. All the methods that I have tried don’t have an option to import e-mails from a flash drive. I have a netbook with Windows XP on it, but I’m pretty sure that Outlook Express doesn’t have a universal e-mail format on it. I want to save the e-mails in a universal format that is readable by Mac, Windows & Linux. Is there such a format?”

These are some of the user queries that pop up every day on forum sites, but none of them provide accurate solutions to convert EML files to MBOX format. In the following section of the blog, users will get a free and automated solution to accomplish this task.

EML to MBOX Converter – A Perfect Guided Solution

RecoveryTools EML Migrator is a One Stop Solution that allows users to batch-convert EML files to MBOX format. Additionally, the software is recommended by IT professionals for its smooth and error-free conversion.

Moreover, users are free to export any size of EML files to MBOX format without any failure. The graphical interface of the EML to MBOX converter is designed to be simple and easy to use so that it can easily be used by all types of users. In addition, there is a dedicated support team available that assists you with every technical problem.

Get the Solution Now:

Note: Free Download EML to MBOX Converter utility trial version and enjoy exporting EML files to MBOX format for both Mac & Windows supported applications.

Quick Steps to Convert EML to MBOX

  • Step 1: Download and install the tool.
  • Step 2: Upload the EML files and folders.
  • Step 3: Check the required folders.
  • Step 4: Choose MBOX as a saving type.
  • Step 5: Browse the path and hit the Convert icon.

How to Convert EML Files to MBOX Files for Mac & Windows?

  1. Install & read all instructions on the home screen of EML to MBOX Converter.

    EML to MBOX Converter

  2. Load the EML files by browsing to the source file location.

    Load the EML files

  3. The software provides selective conversion of EML files to choose databases.

    selective conversion

  4. Choose MBOX file format from the list of saving options.

    MBOX file format

  5. Enable the advanced filter option from the Filter Options tab.

    advanced filter

  6. Setup EML to MBOX Conversion options like Destination path.

    EML to MBOX Conversion

  7. Click on the Convert button & analyze the live conversion process.

    Convert button

That’s all about EML to MBOX Converter. Users can easily convert EML files to MBOX format by performing all the steps mentioned above. It is the safest solution available in the IT market that assures you 100% accurate results. Let’s take a look at the manual procedure to accomplish it.

EML to MBOX Converter & its Major Features

The automated solution helps the users convert EML files to MBOX format. There is no need to have the technical knowledge to perform the EML to MBOX file conversion. Some of the major advantages are listed below:

  • The software provides dual options to upload single and multiple MBOX files and folders using the Select Files and Select Folders options.
  • This tool allows users to convert multiple MBOX files and folders in bulk at once without having file size limitations.
  • This EML to MBOX converter can manage email folder structure and email components including Bcc, Cc, To, From, Date, Subject, Formatting, Image, Signature, etc.
  • Users will receive all the emails in the same folder that was available before the conversion.
  • The utility supports the conversion of EML files created with a large number of applications including Windows Live Mail, Windows 10 Mail, Mozilla Thunderbird, Apple Mail, SeaMonkey, Mac Mail, Outlook Express, eM Client, etc.
  • The utility allows the users to save resultant MBOX files at the user’s desired location.
  • The EML to MBOX Converter software is compatible with Windows OS i.e., Windows 11, 10, 8.1, 8, 7, Windows Vista, Windows Server 2022, 2019, 2016, 2013, 2010, etc.

How to Convert EML Files to MBOX Manually?

Here we are going to use the Thunderbird email client to convert EML files to MBOX. This method is divided into multiple steps, which are mentioned below:

Step 1: Import EML to Thunderbird

Important Note: The ImportExportToolsNG add-on is required to be installed on your Thunderbird account.

  1. Open your Thunderbird account.
  2. Make an empty folder here.
  3. Right-click on the created folder.
  4. Choose the ImportExportToolsNG >> Import EML Messages option.
  5. Browse the EML messages and hit on the Open icon.

Now you have to repeat the same process again and again for each EML file because users can’t upload multiple EML files to their Thunderbird account.

Step 2: Export Messages from Thunderbird as MBOX

  1. Restart your Thunderbird account.
  2. Right-click on the folder, that contains the EML file.
  3. Choose ImportExportTools NG >> Export Folder option.


  4. Browse the location to save the resultant data.


  5. Lastly, click on the Open button.

Drawbacks of the Manual Method

  • Thunderbird installation is required.
  • Users have to repeat the same process again and again for each EML file.
  • Bulk EML to MBOX conversion is not available.

Frequently Asked Questions

  • What is the difference between EML and MBOX?

    The main difference between these files is: that MBOX contains each email in a separate folder and EML stores single email data.

  • Is EML format universal?

    Not universally, but yes, it is supported by multiple email clients including Outlook, Thunderbird, Apple Mail, Windows Live Mail, Eudora, Entourage, etc.

  • What software opens EML?

    If you are looking free method to open EML without any email client, then you should download and install the RecoveryTools EML Viewer for free.

  • Can Chrome open EML files?

    No, Chrome can’t open EML files, if you want to open it in Chrome then you have to convert EML to HTML format. Because Chrome supports HTML format.

The Verge

In this article, we discussed the major requirements to convert EML files to MBOX format by using automated and manual solutions. The manual solution requires the support of multiple applications and involves risk. In contracts, the EML to MBOX converter is designed with an advanced algorithm to reduce the time and effort of users. For more details, you can also contact the technical team.