Friday 19th September 2025

Overview: MBOX is an email file that is used in 50+ email clients such as Thunderbird, SeaMonkey, Apple Mail, Eudora, and many others. MBOX files have multiple emails with intact attachments that make a mailbox. Start with the “From” header, which saves email messages in a concatenated style, with each message saved one after the other. However, MSG is a single email file that is kept in Microsoft Outlook, which was developed by the company. When it comes to sharing emails and managing personal data on the local system, users think MS Outlook is a more relevant and acceptable service than alternative email applications that issue MBOX files. All of this has caused users to gravitate toward Microsoft Outlook and hunt for methods to convert MBOX to MSG. If you also want to export MBOX to MSG, then this blog is for you.

Top Reasons– Why Convert MBOX to MSG Format?

  • Single Email File: An MSG file is usually saved in a single file. This format is easy to manage, share, and back up for few emails.
  • Work with Outlook: As Outlook is used by millions of users to make email management better, MSG files can also be used in Outlook. It gives import, access, and openness without needing extra trouble.
  • Advanced Search and Formatted: MSG-formatted emails are safer than MBOX ones. Additionally, MSG files allow users to use advanced search options in Outlook.
  • Simple Sharing: Anyone can send or get a particular email instead of the entire MBOX email mailbox.
  • Lightweight format: MSG files can be handled one by one. Unlike the bulk MBOX files, there is are chance to become corrupted.
  • Security Purposes: By converting MBOX files to MSG format, users didn’t need Thunderbird, Apple Mail, etc. Users can also save emails in Outlook that provide encryption and security for emails.
  • Legal & Compliance Needs: An MSG file saves the metadata of emails that are perfect for eDiscovery and legal compliance requirements. Also, MSG files can be share on different devices and import easily into Outlook accounts.

Users’ Queries: How to Export Thunderbird Mailbox to MSG?

Hi there, I’m Jefferson Cunningham, and I was born in Reggio Calabria, Spain. I’ve been operating the Thunderbird client individually for the past three years. My mailbox is full and I haven’t receive more emails in the Thunderbird mailbox. Now, I want to convert MBOX to MSG and transfer my emails to Outlook for better email management. I have a few questions here. How can I send my full mailbox files to the Outlook client without losing metadata, folder/labels, and attachments? Did I need to see or download any MBOX to MSG converter can be helpful for me export my MBOX emails into MSG format? Is there any suggestion or method for easily exporting the full mailbox MBOX into the MSG format?

After knowing the reasons to convert MBOX to MSG, users now need a safe and quick method to convert MBOX files to the MSG file format. Users can operate the manual method to convert MBOX files to Outlook, but they have lots of drawbacks.

export-all-mbox-files-to-msg

Manual Method: Move | Convert MBOX to Outlook MSG

You have to apply all these procedures to any MBOX files which is required to convert into different formats, such as documents, emails, and application. There are always certain details missed while managing the processes manually, and due to the complex nature of the process, this could be true here too.

Method 1: Use of Thunderbird and Outlook

Import the MBOX file into Thunderbird if you have already taken a backup of MBOX files for different email clients like Apple Mail, Eudora, etc. In this situation, users need to follow these steps:

  • Install Mozilla Thunderbird.
  • Next, install the “ImportExportTools NG” Thunderbird add-on.
  • Importing MBOX files into Thunderbird is made easier with this Thunderbird extension.
  • Make a new local folder in Thunderbird.
  • Right-click on the new folder.
  • Use “ImportExportTools NG,” and now it shows an option “Import MBOX file.”
  • Select the MBOX file now.
  • Import all the email contents into Thunderbird.

Export Thunderbird MBOX files as EML Format:

  • Select all or a few MBOX files that you want to convert from the Thunderbird folder.
  • Right-click, choose “MBOX emails,” and go with “Save selected messages.”
  • Use the “EML” and save emails in a new folder on PC.

Import EML files in Outlook Account:

  • Open Microsoft Outlook.
  • Go to the folder where you saved all the EML files.
  • Drag n drop all EML files directly into the Outlook mail folder.
  • Import all EML files into Outlook.

Save Outlook Emails in MSG Files:

  • Open that Outlook folder where you store all emails.
  • Choose each email to convert and then open it.
  • Go to “File” > “Save As.”
  • Click on the “Save as type” dropdown.
  • Select “Outlook Message Format – Unicode (*.msg).
  • Pick a location or click “Save.”

Method 2: Try Apple Mail and Outlook to Export MBOX Files on macOS

This method is also similar to the first one, but if users use macOS and want to move Apple Mail MBOX files into MSG format. To convert MBOX emails into Outlook MSG format, these steps will be useful. To understand the process, be sure to follow the detailed instructions.

1. Import MBOX file in Apple Mail:

  • Launch Apple Mail.
  • Explore “File” > “Import Mailboxes.”
  • After selecting “Files in MBOX format,” press “Continue.”
  • Browse for the MBOX file and choose it.
  • Emails can be saved as EML files.
  • In the all mailbox data, pick the MBOX emails you wish to convert.
  • Drag and drop the chosen emails into a Mac folder. They will be saved as separate EML files as a result.

2. Move EML files into Outlook for Mac:

  • Open Outlook for Mac on the MacBook.
  • Drag n drop the EML files into your Outlook folder.
  • Open each email in Outlook for Mac.
  • Go to “File” > “Save As
  • Pick “Outlook Message Format – Unicode (*.msg).”

Free Manual Limitations When Exporting MBOX Files into MSG:

  • Cannot export in bulk MBOX files to MSG Outlook-supported format.
  • MBOX to MSG conversion requires Thunderbird or Microsoft Outlook.
  • Cannot be used by non-technical users.
  • Multiple email clients are need to convert MBOX files into Outlook MSG.
  • Understand Thunderbird add-ons and steps to export MBOX files.

Technical | Professional | Easy Method to Transform MBOX to MSG

Users can use the technical and easy method to convert MBOX to MSG format without any hurdle with the help of this BLR MBOX converter tool. The single tool can easily convert all MBOX files to MSG file format without needing MS Outlook and Thunderbird on a PC. All versions of Windows OS, both new and old, can be use with the program. The tool also converts MBOX to PDF, MBOX to HTML, MBOX to Gmail, MBOX to Hotmail, and many other file formats. Get the latest free demo edition of this tool to check more features.

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Steps to Change MBOX format to MSG:

  • Download the BLR MBOX Mailbox converter.
  • Start tool or select the MBOX files or folders.

select-mbox-emails

  • Choose the MBOX files and preview them.

preview-all-emails

  • Use the filter features of this tool.
  • Select the location to save files.

select-msg-format

  • Click Convert button to convert MBOX files to MSG.

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What are the Notable Features of the MBOX to MSG Exporter Tool?

  • Suitable for all Microsoft Windows OS editions.
  • Working with all email clients that accept MBOX, such as Apple Mail, Thunderbird, and others.
  • Trustworthy and safe.
  • Quickly convert bulk MBOX files.
  • Support all MS Outlook versions.
  • Date filter available.
  • Convert with or without attachments.
  • The naming convention feature is available.
  • Free demo edition available for all users.
  • Import MBOX files to Gmail with attachments.

Conclusion

Users will learn the simple and effective method to convert MBOX to MSG for Outlook. The tool solution is fully safe to convert all MBOX files to Outlook without losing a single format of MBOX files. Users can download the software on all Windows OS editions. The free method can be easy to operate for technical users who have expertise in this field. Users can choose any method to export MBOX files to MSG. I hope this informative article is a great assistance and a solution to convert and export MBOX to MSG format of the Outlook program.

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