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Convert MBOX to EML

Convert MBOX to EML
Converts MBOX files to EML format. It is possible to retain the original folder structure.
Version: 4.21 released on May 11, 2023.
(4.8 / 90 reviews)

Convert MBOX to EML for Outlook
You can download a free limited version down below

The MBOX to EML converter changes the multi-message MBOX format to a single-message EML format. This is an optimal solution to make email messages more accessible and extract individual messages from the entire email database. It keeps the original folder structure and email data intact. You can organize EML files into folders according to the predefined criteria.

Main features

  • Convert MBOX files of any type from various email clients such as Thunderbird, Apple Mail, and others.
  • Compatible with all versions of Outlook, starting from 2007.
  • Convert multiple MBOX files at once, making the process more efficient.
  • Maintains the original folder structure of MBOX files during the conversion process, resulting in EML files organized in the same way as the original MBOX files. Creates a new folder for each source file.
  • Preserves important information such as the sender, recipient, subject, and attachments during the conversion process, making the resulting EML files as close to the original messages as possible.
  • Can organize the resulting EML files into different folders using ready-made macros, making it easier to find specific emails later.
  • Provides a command line application for mass MBOX to EML conversion and conversion on schedule. It allows you to migrate many mailboxes in different folders for different users.
  • Provides a log of the conversion process, including information about the files that were converted and any errors that occurred.
  • A user-friendly interface that is easy to navigate, making the utility accessible to users of all skill levels.

What is the MBOX file format?

MBOX is a file format to store email message databases. It is widely used by different email clients such as Mozilla Thunderbird, Mac/Apple Mail, Spicebird, Opera, and others. MBOX files are often used for archiving and backup purposes.

What is the EML file format?

EML is a file format to save and store individual emails. It can be opened in most email programs, including Microsoft Outlook and Windows Live Mail. EML files are mainly used for importing and exporting individual messages.

What is the difference between MBOX and EML?

MBOX is used to store multiple messages, while EML stores individual emails. MBOX files are intended for transferring, archiving, and backup purposes, while EML files are used for importing and exporting messages. EML is supported by more email applications than MBOX. For example, it can be opened in Microsoft Outlook.

Why do you need to convert MBOX to EML?

The main reason to convert MBOX to EML is to make the stored emails more accessible.

  • MBOX message databases are very limited in use. All messages from an email folder are stored in one text file, which makes it difficult to view and find the desired information.
  • MBOX files can reach up to tens of gigabytes in size, making it hard for the email application to open and handle them.
  • EML files are more versatile, as they can be opened and read by more email clients, including Outlook. The MBOX subformats (mboxo, mboxrd, mboxcl, mboxcl2 and others) were supported earlier by many mailers, but today this format is rare and outdated.

Another reason to convert MBOX to EML is for the ease of import and export of emails. EML files can be easily imported and exported to other email clients, making it easier to switch between email services or share emails with others.

In summary, converting MBOX to EML allows for better accessibility, organization, compatibility, and management of emails, making it a useful tool for individuals and organizations.

How to convert MBOX to EML manually

There is no direct way to transfer MBOX messages to EML files without the help of additional tools. To convert MBOX to EML manually, you need to use an email client that supports both MBOX and EML file formats. You can import an MBOX file into the email client, select the desired messages and export them as EML files by dragging and dropping. And then, repeat these steps for each MBOX file.

In many cases, you will need an extra add-in to import MBOX into your mailbox.

Manual MBOX to EML conversion has considerable disadvantages:

  • It is a time-consuming process, especially if you have many MBOX to convert.
  • There is a risk of human error during the manual process, which can lead to data loss or corruption.
  • Manual conversion has no advanced functionality, such as mass and batch conversion.
  • Some types of MBOX files are only compatible with specific email clients and can lead to issues when trying to open the resulting EML files.
  • The manual process is complex and not easy to perform if you don't have a technical background.

Pitfalls of MBOX to EML online conversion

It's important to consider the following limitations before using online conversion tools. Weigh these against the convenience of this method.

  • Using online tools to convert MBOX to EML is risky, as off-site conversion can compromise your data.
  • It may not preserve the original folder structure or important information such as email headers, attachments, and email properties.
  • Online conversion tools are limited in functionality and compatibility.
  • MBOX files are often very heavy and take a long time to upload, which requires a lot of traffic. If the mbox. files are too large, it may cause their upload and download of the results to fail.
  • You are dependent on an Internet connection when converting online.
  • The cost of using online services may be too high for large or numerous source and resulting files.

It's always recommended to use trusted software to perform the conversion.

How to convert MBOX to EML automatically

This specialized software automatically converts MBOX files to EML format, operating on a local computer. It offers advanced features and provides an efficient, rapid, and secure method to extract individual emails from the MBOX archive.

Benefits of the automatic conversion from MBOX to EML

  • The automatic method is completely safe. The source files remain unchanged.
  • The utility maintains the original folder structure and preserves email headers, attachments, formatting, and other properties.
  • You can convert multiple MBOX files to EML format at once, saving time and effort.
  • The converter provides ready-made macros to organize the resulting EML files into folders, making it easier to navigate and find specific emails.
  • A command line application can be used for mass and scheduled MBOX to EML conversions. This allows you to automate the conversion process for multiple users.

Steps to convert MBOX to EML

  1. Launch the utility separately or from the Outlook ribbon.
  2. Select the MBOX file or folder with files that you want to convert.
  3. Include subfolders if needed.
  4. Select the location to save the converted EML files.
  5. Use macros to create subfolders with appropriate EML messages.
  6. Choose the overwrite mode.
  7. Initiate the conversion process by clicking Run.
  8. Get the final log report to save it or copy and paste it.
  9. Check the resulting EML files in the designated location.

Bulk MBOX to EML conversion

Converting multiple MBOX files to EML format can also be done easily. Use the command-line app in the Professional Version of the utility, which allows you to do it in bulk for different users. You can create different conversion scripts of any complexity using batch files. Additionally, by using the app together with Windows Task Scheduler, you can schedule multiple conversions.


Are there any limitations when converting MBOX to EML?

The utility has no limitations on the type, size, and number of files to convert.

Will I lose any data during the conversion process?

The software ensures no data loss during the conversion. It preserves all the original data, including attachments, metadata, formatting, images, and other data.

How long does the conversion process take?

It depends on the number of files and their sizes, but generally, the conversion process should be fast.

OutlookFreeware.com Outlook Ribbon
All utilities easily integrate with Outlook (optionally)

* This utility is for non-commercial home use only. It will not run in domain enviroment. Some of the described features and support for domain enviroment are available in advanced version of the utility only. Free version may have additional limitations.

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