Manual & Professional Methods Explained to Bulk MBOX to EML Conversion

If you're in the need to convert MBOX to EML files in bulk, you've come to the right place. This guide will walk you through both manual and professional methods to accomplish this task with ease.

MBOX to EML conversion requires a method or tool that can handle the transition efficiently. Whether you're using a free email client like Mozilla Thunderbird or seeking a more professional solution, it's essential to have the right approach in your arsenal to make this process seamless.

In this guide, we will introduce two effective methods for MBOX to EML conversion: one using Mozilla Thunderbird, a free email client, and the other employing GainTools MBOX to EML Converter, a professional software designed for efficient email conversion.

MBOX VS EML – A Brief Idea

Before delving into the conversion methods, it's essential to understand the fundamental differences between MBOX and EML file formats.

MBOX Format:

  • Stores all emails from a mailbox folder.
  • Supported by many email applications.
  • Cross-platform compatibility.
  • File size varies with mailbox size.

EML Format:

  • Stores a single email message.
  • Supported by nearly all email applications.
  • Cross-platform compatibility.
  • Individual messages can result in a bulky format.

How to Convert MBOX to EML File Manually?

If you prefer a manual approach, Mozilla Thunderbird is an excellent choice as it supports both MBOX and EML formats. Here are the steps to manually convert MBOX to EML using Thunderbird:


  • Install and run Mozilla Thunderbird.
  • Configure an account if necessary.

Step 1: Import MBOX File to Thunderbird:

  • Restart Thunderbird.
  • Go to "Tools" and then to "Add-ons & Themes."
  • Search for "ImportExportToolsNG" and add it to Thunderbird.
  • Restart Thunderbird once more.
  • Select "Tools," then "Add-on (ImportExportTools NG)," and choose "Import MBOX file."
  • Choose the option "Import Directly One or More MBOX File."
  • Choose the MBOX file you want to open and click "OPEN"

Read this Blog: Professional Solution to Import MBOX Emails to PST Format

Step 2: Export MBOX to EML Format:

  • Right-click on the imported mailbox folder.
  • Choose the add-on "ImportExportTools NG."
  • Select "Export all messages in folder" and then "EML format."
  • Choose the destination location and click "Select Folder" to save the emails.

The Manual Method is Functional but has Some Drawbacks:

  • Requires Thunderbird installation and configuration.
  • Involves multiple steps, making it time-consuming.
  • Lacks a bulk conversion option, necessitating repetitive steps for each email.

Accurate & Automated MBOX to EML Converter

For a more efficient and automated approach, consider using GainTools MBOX to EML Converter. This professional tool is designed to handle various MBOX conversion scenarios, making it a trusted choice for users worldwide. It offers a straightforward and reliable solution to convert MBOX to EML with ease while preserving email properties and metadata.

Here's how to use the GainTools MBOX to EML Converter:

Step 1: Install and Launch the Software:

  • Install the MBOX to EML Converter and click "Next."

Step 2: Upload MBOX Files:

  • Use the "Select Files" or "Select Folders" options to upload your MBOX files and folders.
  • Select the desired folders/subfolders.

Step 3: Configure Conversion Settings:

  • Choose EML as the output format from the dropdown menu.
  • Apply advanced filters using the "Filter Options" to convert MBOX to EML selectively.
  • Customize file naming with the "File Naming Option."
  • Specify the destination folder using the "Browse" button.

Step 4: Start the Conversion:

  • Click the "Convert" button to begin the MBOX to EML conversion process.

Fundamental and Comprehensive Functions of MBOX to EML Converter:

  • Supports both single and multiple MBOX files/folders.
  • Allows exporting selective folders in bulk.
  • Advanced filter options for selective conversion.
  • Excludes empty and unwanted folders.
  • Compatible with MBOX files from various email clients.

Frequently Asked Questions

Q: What is the difference between EML and MBOX?

A: MBOX files store all emails from a mailbox folder, while EML files store individual email messages separately.

Q: How do I convert MBOX to EML on Mac?

A: You can convert MBOX to EML on Mac using Apple Mail:

  • Import MBOX to Apple Mail.
  • Open the email from the MBOX file.
  • Pick "File" and "Save As," then select "Raw message source" as the format.

Read this Blog: Solved Solution For Migrating Thunderbird Emails to Outlook PST

Q: What software can read MBOX files?

A: If you need to read MBOX files for free, you can use our GainTools MBOX to EML Converter Software, which offers advanced features and filters.

Final Thoughts,

Converting MBOX to EML files can be a straightforward process, and this guide has covered both free and professional solutions to get the job done. While the manual method using Thunderbird is functional, the automated approach with GainTools MBOX to EML Converter offers speed, accuracy, and ease of use. It ensures that email properties and metadata remain intact, and you can avoid the hassle of repetitive manual steps, saving time and effort.

Choose the method that best suits your needs, and start converting your MBOX files to EML with confidence. Whether you're switching email clients or need to organize your email data, these methods provide reliable solutions to accomplish your tasks effortlessly.

14 Oct 2023

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