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Summary: This content discusses the conversion of EML files to the MBOX format, offering both manual and automated methods. It emphasizes the benefits of an automated tool like Kernel for MBOX to PST for efficient and versatile conversion.

In our modern digital landscape, an array of technologies has become integral in simplifying and enhancing our daily lives. The continuous advancement of technology not only ushers in fresh prospects but also sparks revolutionary concepts worldwide. This technological progression raises the bar for organizations, streamlining their processes and enabling seamless data accessibility from remote locations. However, it’s important to acknowledge that various applications carry inherent risks, including data corruption, breaches, and hacking. Consequently, some individuals opt to store their data on local devices to mitigate these potential vulnerabilities.

When it comes to managing emails, one option is to preserve your email data on your local device by transforming .eml files into .mbox files. Various factors can drive this format conversion. For instance, it may be necessary when a user transitions to a new workplace, switches email clients, or updates their current email client.

EML: EML, short for Electronic Mail, serves as a file format designed for preserving email components like message content, attachments, and formatting. This format finds compatibility with a range of email clients, including Microsoft Outlook, Apple Mail, Windows Live Mail, and more. EML files maintain email messages in plain text format and encapsulate essential information such as sender and recipient details, as well as the message’s timestamp. Developed by Microsoft, EML employs the IMF (Internet Message Format) syntax for text message storage.

MBOX: The MBOX file format, short for email mailbox, enjoys widespread support among open-source email clients. In this format, messages are neatly arranged in a concatenated structure, sequentially listing each message. This format offers a secure and durable storage solution for mailboxes, making it the preferred choice for users. Various web-based applications, including Gmail and Horde, enable users to export or save their mail folders as MBOX files. These files fall into the category of database files, which can be effortlessly opened using text editors like Notepad, TextEdit, or Atom. A notable example of a common MBOX file is INBOX.mbox, the primary Inbox mail folder used in Apple Mail.

Methods to convert EML to MBOX

You have two options for converting EML files to the MBOX format: the Manual method and the Automated Method.

Manual method: Convert EML to MBOX using Mozilla Thunderbird

Converting files in bulk through the manual approach entails a two-stage process:

  1. Set up the Thunderbird account.
  2. Save the file as an MBOX file format.
Steps to configure an account in Mozilla Thunderbird
  1. Install Mozilla Thunderbird and launch the application on your system.
  2. Set up the email address within Thunderbird.
  3. After setting up your account, simply perform a right-click on the local folder displayed in the left pane.right-click on the local folder
  4. Sure, go ahead and establish a fresh folder, then deposit your EML file into it.create a new folder
  5. Ultimately, your EML file will be added to Mozilla Thunderbird with success.added to the Mozilla Thunderbird
Steps to Export EML files into MBOX using Thunderbird
  1. To begin, select the “Add-ons and Themes” choice within the “Account Settings.”Add ons and themes
  2. Please perform a search for “ImportExportTools NG” at this ImportExportTools NG
  3. Afterward, select the Add to Thunderbird on the Add to Thunderbird
  4. To begin, please perform a right-click on the EML files folder and select the “Import Export Tools NG” option after restarting the application. Now, proceed to click on the “Export folder” option.Click Export folder
  5. Please choose the destination to which you’d like to export the the destination
  6. Ultimately, confirm the successful export of your EML files to MBOX by inspecting the designated location.

Kernel for MBOX to PST

Utilizing the manual approach described above can pose challenges due to its lengthy and repetitive nature. Consequently, opting for an automated solution is highly recommended, especially when seeking the quickest EML to MBOX conversion method. When considering automated conversion, it’s advisable to begin with the demo version for evaluation.

Engaging in this approach is advisable, as it offers flexibility in case the chosen tool doesn’t meet your requirements. Once you determine the tool’s effectiveness and are content with its performance, you can transition to its licensed version. There is a plethora of automated tools accessible in the market, allowing you to select one that aligns with your specific needs.
While making your selection from the array of available options, it’s wise to consider key features like bulk EML file conversion, support for naming conventions, filters, and more. So, you should try Kernel for MBOX to PST. This revolutionary tool offers the capability to transform EML files into the MBOX file format, as well as provide users with the flexibility to convert EML files into various formats like PDF, PST, MSG, and more. Moreover, it empowers users to effortlessly migrate EML files to diverse email platforms, including Gmail, Yahoo, and others.

This tool can be the best for all your needs as it is also able to filter emails (by From, To, Date, Subject, etc.). In addition, this tool also offers a live preview of items before saving the mail in the desired location.


This blog offers recommendations for converting EML files to the MBOX file format. Manually exporting EML emails to MBOX is a secure and dependable option, ensuring data integrity. However, the manual approach can be time-consuming and intricate. As an alternative, you may consider using MBOX to PST conversion tools for a more streamlined process when converting EML files to MBOX format.

Kernel for MBOX to PST