How to Convert MBOX to EML File

Last Updated on November 4, 2020 by admin

As we know that MBOX format is supported by various email clients like – Thunderbird, Apple Mail, Entourage, Eudora, Pocomail, which use MBOX format files to store and organize mailbox data. Whereas, an EML file is an email message saved by an email program, such as Microsoft Outlook or Outlook Express. It can also efficiently works on Windows Mail, Apple Mail, etc, and contains the content of the message, along with the subject, sender, recipient, and date of the message. It comes in its original HTML format.

Whenever users want to change the email client, first they have to change the file formats. Therefore, here we have mentioned some manual as well as automated solution for converting MBOX into EML file, which will help you in this task. To successfully convert MBOX to EML files, follow the various methods given below: 

Different methods to convert MBOX to EML file

Method 1: Using Save as option

  1. Launch Mozilla Thunderbird email client on your system
  2. select all the email messages you want to export
  3. After that, right click and choose Save As from the option
  4. Navigate to the folder where you to keep your email
  5. Now press on Save button to convert MBOX to EML file

Method 2: Using Save selected messages

Using the Save Selected messages feature, export the emails to PST, EML, MSG, EMLX, HTML file format. Follow the given steps to convert MBOX to EML in easy way:

  1. Run Mozilla Thunderbird on your PC
  2. Select the required emails messages to convert
  3. Now, right-click on the mail and choose Save selected messages
  4. Now, select EML format from the drop-down menu
  5. Browse & choose the folder where you want to save the file
  6. Finally, click on the Save button

Method 3: Using ImportExportTool Add-on

Mozilla offers you an add-on named ImportExportTools that enable you to easily convert and save entire MBOX files data to EML file format.  You can simply download this tool from the link: and after that you follow these steps given below for easy conversion of your files.

  1. Run Mozilla Thunderbird on your system
  2. Visit menu bar and select ‘Tools and then click on ‘Add-on’
  3. In the ‘Add-ons Manager’, select ‘ImportExportTool’ under ‘Featured Add-ons’
  4. Now, go the ‘Add to Thunderbird’ option, click on it for adding ImportExportTools add-on
  5. After that, a message appears ‘Add ImportExportTools’. Click Add button
  6. Now, click on the ‘Restart Now’ button to restart Thunderbird
  7. Once the Thunderbird get restarted, right-click on folder which you want to export
  8. Now, click ‘ImportExportTools’ → ‘Export all messages in the folder’ → ‘EML format’.
  9. Now, choose folder to save the email by clicking on ‘Select Folder’ option
  10. Now your entire emails will be successfully converted from MBOX to EML file

Difficulties You May Face with Manual Methods

While using the above manual methods, users face many challenges related to this method. Some of them are listed below:

  • The manual method allows users to access only one converted message at a time.
  • There is high risk of data alteration as it doesn’t maintain mailbox hierarchy.
  • The ‘ImportExportTools’ can converts only one folder at a time. Thus, it is very difficult for the users to convert all MBOX mail folders to EML file.
  • Manual method is a time-consuming process, that complex procedure for MBOX to EML

Method 4: Using MBOX to PST Software

In this situation, adopting automated software like Regain MBOX to EML Converter tool can prove very beneficial for you. This tool allows you to convert all the data to different file formats like PST, EML, MSG, EMLX, HTML and Office 365 Platform. It provides various features for successful conversion like selective file conversion, auto search feature, add folder feature, etc. This tool has very easy working process to convert MBOX to EML.

Follow the working process of this MBOX to EML Converter tool step by step:

  1. Download and install Regain MBOX to PST Converter Tool.
  2. Click the Add File button to select single or multiple MBOX files
  3. Click “Preview” to see all mailbox items
  4. Choose file format from dropdown list using choose file saving options. Here, select EML format
  5. Now select the destination location to save the converted file on desktop.
  6. After that, click on the Export button to convert MBOX to EML
  7. Once the conversion task completes, click on exit button to close the application.

Here are some other important features of Regain MBOX to EML Converter Tool, let us see some of their features listed below:

  1. This effective software enables users to perform selective conversion of MBOX file to different file formats.
  2. With the help of this tool users can successfully converts MBOX/MBX/MBS files into the EML format.
  3. It provides easy, safe and direct conversion of all the emails and attachments of the MBOX file into Office 365 & Live Exchange Server.
  4. The software embedded with auto search options; therefore, it helps the users to easily search the MBOX file from the local system quickly.
  5. The tool allows users to migrate any size of MBOX file, as there is no file size limit when converting file data.


You will find many methods for the conversion of MBOX to EML file, but all of these methods convert only one message at a time, so this method can be very time consuming. Therefore, we suggest our users to use an third party tool like Regain MBOX to EML Converter tool that avoids all these problems and perform a safe and secured conversion of MBOX to EML files.

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