How to Convert MBOX to MSG Format? 2 Simple Methods

  Rollins Duke
Rollins Duke   
Published: June 4th, 2026 • 7 Min Read
Summary: You can safely convert MBOX to MSG format for migration to Outlook on Mac & Windows, with attachments & folder hierarchy retention, using the BitRecover MBOX to MSG Tool. Alternatively, you can save emails of MBOX to MSG files while relying on the MBOX-based email client, such as Thunderbird, Apple Mail, PostBox, etc., and Outlook together. Here is the detailed step-by-step with essential tips to follow.

MBOX V/S MSG Files: Core Difference

Factor MBOX MSG
File Type Open Source – Email Container Proprietary to Outlook – Single File
Data Storage Multiple emails + attachments in Base 64 encoding in MIME Structure Single eMail with attachment in OLE2 structure in MAPI
Source Apple Mail, Thunderbird, Google Takeout, Entourage Outlook & Exchange Only
Password Protection No Yes

Both the MBOX and MSG files are used to store emails locally on your computer, share, and for seamless migration between email clients. They are structurally different. Additionally, there is no native way provided by Microsoft for exporting emails from MBOX to Outlook MSG. Thus, the walk-around manual conversion has a higher risk of corruption & loss.

Why Convert MBOX to MSG?

MBOX files are not so great for storing email messages. You can’t easily manage messages in Windows Explorer or keep your folder structure intact. Plus, MBOX files can get big, making email backups less reliable. Converting MBOX to MSG can be helpful because it:

  • Lets you move your messages to Microsoft Outlook.
  •  Changing MBOX files to MSG allows you to access your emails using Outlook or Exchange.
  • Helps you archive your emails in a more compatible Outlook format.
  • Makes it easier to browse and search emails using standard Windows tools.

Convert MBOX to MSG File Format for Free with Mail Client

When is the Manual Approach Feasible to Convert MBOX to MSG?
In case you have a small amount of email data (eg, 100–200 MB), non-sensitive emails, basic technical skills, and enough time to manually reorganize the data. The process lets you generate Unicode MSG files (which is the true most compatible version).

Note: The step given below is for Outlook Classic. The process will work for each email message at a time. Bulk conversion can be restrictive and time consuming.

  1. Open MBOX file in an email program that works with MBOX.
  2. Save each email from the MBOX as an EML file.
  3. Open each EML file in Microsoft Outlook.
  4. Once imported, select the emails.
  5. Click on File >> Save As and Unicode Outlook Message Files.
  6. Do the same process for every MBOX file you want to convert.

Alternative Manual Way Using an Intermediate IMAP Account

  1. Use an email client like Thunderbird to import the MBOX file.
  2. With the “Move To” or “Copy To” option, transfer local MBOX to an IMAP account.
  3. Configure the same IMAP account in Outlook.
  4. Select emails from MBOX files to be saved as MSG.
  5. Click on File >> Save As, choose Unicode Outlook Message Files.  (In Outlook New: File >> Save As >> Save as MSG.)

Challenges with the Free Solution to Export MBOX Files to MSG

  • The process is completely dependent on Outlook, making MBOX to MSG conversion unnecessary for MBOX migration to Outlook.
  • Although it is rare, operating on a single file increases the risk of corruption.

Best Solution to Convert MBOX to MSG in Bulk

The trial version of BitRecover MBOX Converter software will enable users to export the first 25 emails from each folder for free. It is the perfect option to save MBOX emails as MSG files while maintaining folder hierarchy.

It is not necessary to have advanced technical knowledge for users to transfer emails from MBOX to MSG files. The graphical user interface of the MBOX to MSG Converter is very easy and simplified since any non-technical user can understand it.

How to Convert Multiple MBOX Files to MSG at Once?

By following this guide you will learn about how to export emails from MBOX files to MSG format. One can convert unlimited emails and messages from MBOX to MSG mailbox by following these simple steps:

  1. Launch the MBOX to MSG converter and hit on the Select Files or Select Folders tab to convert MBOX to MSG.

    upload files to convert MBOX to MSG

  2. Check all or desired mailbox files from the software interface and press the Next button.

    desired mailbox

  3. Choose MSG as a saving format to transfer emails from MBOX to MSG.

    saving format to convert MBOX to MSG

  4. The MBOX to MSG converter also gives several file naming options for storing resultant MSG files by Subject, Date, From, Auto Increment, etc to convert MBOX to MSG.

    file naming options

  5. By default, it chooses Desktop as the destination path, but users can also click on the Browse icon for selecting a different destination location. After that click on the Next button to start the conversion task.

    destination path

  6. MBOX to MSG conversion process is running, please wait.

    process is running

  7. The process has been completed successfully.

    completed process

  8. It will automatically open the destination path so that users can easily get their converted .msg files. During the process, it also creates a log report.

    convert MBOX to MSG

From the above detail, we can easily conclude that users can export mailboxes from MBOX files to the MSG file format. It is not necessary to have advanced technical knowledge or guidance for operating this software. It is considered one of the best solutions available to convert MBOX to MSG files.

Features of MBOX to MSG Converter Tool:

The software is designed with advanced algorithms to export MBOX emails to MSG. Some of the main features of this utility are listed below:

Factor Feature Advantage
Data Conversion Limit No limitations on file size or number of files Supports bulk MBOX to MSG conversion
Data Integrity Preserves headers, CC, BCC, sent time, attachments, email body, formatting, and metadata No data loss accurate MIME to MAPI conversion
Technical Configuration 67.7 MB compatible with all Windows and Mac versions Standalone and lightweight solution
User Skills Easy-to-use and intuitive interface Suitable for both technical and non-technical users
Organization Facility 10+ file naming options and destination selection feature Simplifies email management after conversion
Selective Conversion Advanced filters by date, To, From, IDs, and subject Avoids unnecessary and junk email conversion
Time Taken for Conversion High-speed conversion with Next Gen algorithms Converts over 50 GB of MBOX data to MSG within minutes
Security Offline processing – HIPAA, CCPA, and GDPR Complaint Maximum data privacy and security

Note- You can also use this software if you want to import MBOX to Outlook format.

Want to Convert MBOX to MSG with Us?

If you need any help exporting MBOX to Outlook MSG, or want to request some additional features for MBOX to MSG conversion. Get in touch with BitRecover support via the Live Chat option available 24/7 globally.

User Queries & Solution to MBOX to MSG File Conversion

Query: I have bulk-archived MBOX data from multiple employee accounts that I want to convert to MSG, due to the restricted support of my Outlook Workflow. I need the exact conversion due to compliance reasons. What is the best solution?

Expert Solution: BitRecover MBOX to MSG Wizard lets you convert all MBOX Files to Outlook MSG with RFC822 headers, inline attachments, exact folder hierarchy, and complete formatting. It can support multiple MBOX architecture types and has no conversion limits.

FAQs: Convert MBOX to MSG

Q 1: Can I Export MBOX to MSG from Google Takeout?

Yes. You can use the suggested software to convert MBOX files to MSG form Google Takeout. However, ensure that you have already unzipped the Google Takeout file.

Q 2: Is the output MSG using the tool a Unicode Outlook Message file?

Yes, the output is a Unicode MSG that you can import into any Outlook version.

Q 3: How will I find a specific email after I save MBOX email messages to MSG format?

The software allows you to save MSG files with details like Subject, Date, Sender Name, or Time in the file name, making it simple to search and identify emails later.

Q4: Is BitRecover MBOX File to MSG Converter Tool Free? 

You can convert 25 emails per email folder from MBOX to MSG format completely free of cost using the demo version.

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