How to Convert MBOX to MSG With Attachment in Bulk?

Introduction: Think of your email history as a treasure box safely locked away in an old MBOX format, containing important conversations, attachments, and files. Now, if you are switching to Outlook, this means you need the data in a light and simple format like MSG. So, to convert MBOX to MSG for productivity, you’ve come to the right place. This guide has an efficient MBOX Converter and other free solutions.

Understanding the Formats and Need to Export MBOX to MSG

Both MBOX and MSG formats email data in different ways and for distinct ecosystems. Yet, they both share the same core function of storing email data. 

>> MBOX is a generic mailbox format that stores messages from a folder into one database file. Commonly used mail clients are Mozilla Thunderbird, Apple Mail, PostBox, Netscape, Eudora, and Opera. 

>> MSG is a proprietary file format developed by Microsoft for storing a single email message containing attachments, sender/recipient identification, and subject line. The MSG format is native to Microsoft Outlook.

Furthermore, saving MBOX to MSG format is necessary when you are:

• Migrating from Thunderbird or other client (MBOX file) to Microsoft Outlook (MSG file).
• Need to open or view the MBOX emails directly in Outlook. 
• Want to save or share single emails with colleagues using Outlook format.
• Required by law to keep emails in a common, self-contained file in a neutral archive format like MSG.
• MSG files can be indexed individually and are easy to organize, search, and sort.

How to Convert MBOX to MSG With Attachment in Bulk?

We will study different free methods and an automated tool in this section for the conversion. You can follow any of these methods as per your preferences. Also, explore why users consider the tool-based solution as the best one. 

Method 1: Convert MBOX File to MSG Online Free

This method is for Windows users and utilizes MS Outlook and Mozilla Thunderbird applications to perform the conversion. The steps in this method are divided into two sections for a clear and easy understanding:

Section 1: Convert MBOX to EML 

1. Start the Thunderbird application and install the ImportExportTools NG extension in it.
   
 
2. Ensure you have your MBOX files stored in Thunderbird, or else, use the extension to add them.
   
 
3. After that, right-click on the MBOX folder, click ImportExportTools →Export all Messages in Folder.
4. Then, select the EML Message Format, and the type in which you want the files.
   
 
5. At last, a dialog shows to choose the output folder, pick it, and click Select Folder.
   

Section 2: Change MBOX to MSG (EML→MSG)

1. Once you have secured .eml files on your desktop, open MS Outlook.
2. Next, drag and drop EML in your Outlook account or use Open With.
   
 
3. Afterward, click File from the ribbon and from the options, press Save As.
4. Later, choose Outlook Message Format-Unicode (*.msg) from the file type.
   
 
5. In the end, select the folder where to save and click Save.

Method 2: Convert MBOX to MSG on Mac OS

In this method, you need access to Apple Mail and Outlook for Mac. The steps to follow here are:

1. Start Apple Mail and from File, click the Import Mailboxes option.
   
 
2. Then, choose Files in MBOX Format and click Continue to proceed.
   
 
3. Further, locate the .mbox on your macOS and click Choose to open it.
4. Once done, drag and drop these emails from Mac Mail on your Mac desktop.
5. The MBOX files are saved in EML format on the Mac.
6. Now, again, drag and drop the EML files into your Outlook for Mac. 
7. At last, using Save As, complete the process to export MBOX to MSG.
   

How the Manual Method Falls Short?

Though it is free, suitable for individual users or those with a few MBOX files for conversion. This method cannot be useful to enterprises, IT professionals, and business users. Here’s why:

• It involves many steps, is technical, and takes a lot of time.
• These are not applicable to convert large volumes of MBOX files.
• You need to have a specific application installed and running on Mac and Windows separately. 
• There are no options for customization and no guarantee to retain the data structure. 

So, generally, users try to switch to a more reliable, secure, and automated approach. As it may save time, cost, and effort altogether. Also, using it, you can even convert MBOX to CSV and other formats. Find out in detail about this smart utility below. 

Method 3: Convert MBOX to MSG Effortlessly 

MacSonik MBOX Converter is an all-in-one solution for your bulk MBOX conversions with attachments. It allows you to change MBOX files while keeping their original structure maintained and needs no technical expertise. Additionally, you can use it on any Mac or Windows OS without any additional applications. Moreover, the tool offers unique filters and has many file formats to save MBOX in formats other than an Outlook MSG file. Like, you can convert MBOX file to DOC and so or even save in several email clients with ease. 

What is the Process of Saving MBOX to MSG?

1. Launch the MBOX to MSG Converter and choose to Add File.
2. Navigate through the folders on your OS and pick MBOX files. Tap Next.
3. Afterward, choose the folders after previewing through the tree hierarchy.
4. Click Next and further, opt for the MSG file format from the drop-down list.
5. Finally, pick your destination folder with Path and click Convert.

Conclusion

As said, time is money, and in a world where data is key, security and efficiency are essential. Relying on manual methods to convert MBOX to MSG will waste time, incur risk, and may lead to serious data loss. Whereas a professional conversion tool will help ensure you receive optimum results. Plus, the guarantee that original attachments and metadata are preserved.

Frequently Asked Questions

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