How to Convert MBOX File to PST Format in Bulk? Top Techniques

Approved By Rollins Duke

Published On December 30th, 2025

Reading Time 7 Minutes Reading

Summary: In this blog, we will discuss everything you need to know about how to convert MBOX file to PST format. There can be several reasons that a user needs to perform this conversion, such as email migration or data backup or to improve compatibility with Outlook. We will talk about all the aspects related to the MBOX to PST conversion process. So, to understand the complete conversion in a simple and clear way, continue reading this blog till the end.

Why Choose PST Over MBOX?

MBOX File: MBOX is a common mailbox file format that is used by multiple email clients such as Thunderbird, Eudora, Apple Mail etc. It is a single text-based file that stores all your emails that makes it easy to access across different platforms. But, it lacks advanced security features and is not ideal for managing large or complex mailboxes.

PST File: PST, stands for Personal Storage Table is a Microsoft Outlook data file that stores all the mailbox data including emails, contacts, tasks, attachments etc. PST is widely used in professional environments as it supports large data size files, used for better organization and security aspects.

Users can convert MBOX file to PST format with manual as well as professional methods safely. We will discuss both the methods but first, let us see why do even users need to perform MBOX to PST conversion, what are the reasons behind it.

What are the Reasons to Convert MBOX File to PST Format?

Switching to MS Outlook: Outlook does not support MBOX, so conversion is required to access emails.
Better Email Management: PST format offers better organization of data with folders, rules and filters.
Business Uses: Businesses rely Outlook to manage their data, making PST files are important for them.
Improved Data Security: PST files offers security of your email data to store files safely.
Handling Large Mailboxes: PST can manage large email data more efficiently than MBOX.
Backup & Archiving Needs: PST is commonly used for a long-term email backup and storage needs.

How to Export MBOX to PST Manually?

Converting MBOX files to PST format directly is not an easy task, so you have to take the help of a third-party application that supports both MBOX and PST formats. So, we will use the Thunderbird and Gmail accounts for the whole process.

We have used the two manual methods, and both are explained below in detail to convert MBOX to PST file:

Method 1: Using Thunderbird

Firstly, we will import MBOX files to Thunderbird, and then we will export uploaded MBOX emails as EML format, which can be accessed in an Outlook account. And we will export the mailbox as a PST format.

#1: Upload MBOX File Data

Open your Thunderbird.
Choose the “Tools” >> “ImportExportTools” >> “Import MBOX Files” option.
Select the “Import One or More Files” and then the “Next” button.
Select the location of your MBOX file.
Lastly, choose the “Open” button to convert MBOX file to PST.

#2: Export Uploaded Emails as EML

Restart Thunderbird.
Locate the uploaded data files.
Right-click on the uploaded folder.
Choose the “ImportExportTools NG” >> “Export All Messages in Folders” >> “EML Messages Folder” options.
Select the path to save your output data files.

#3: Import EML Files to Outlook

Locate the path of downloaded emails.
Right-click on it.
Choose the “Open With” >> “Outlook” option.
Your emails will move into your Outlook account.
After opening your emails, choose the “Move To” option.

#4: Convert Uploaded EML Files to PST Format

Choose the “File” tab in Outlook.
Select the “Open & Export” >> “Import/Export”.
Choose “Export to a File” from the list.
Select the “Outlook Data File”.
Choose the uploaded file to export.
Select the location to save the file and hit the “Finish”.

Method 2: Convert MBOX File to PST Format using Gmail

Again, here you have to follow multiple steps to export MBOX to PST format. All the step-by-step the guide are mentioned below:

#1: Import orphan file on your Thunderbird account by following above mentioned steps.

#2: Configure Gmail to Thunderbird

Restart your Thunderbird.
Select the “Account Settings” from “Tools”.
Find the “Account Action” and choose “Add Mail Account”.
Type the details like email address, password, etc.
Choose the IMAP and hit the “Finish” icon.

#3: Move Emails to Gmail Account

Locate the uploaded folder in Thunderbird account, right click on it and choose Move to >> and connect Gmail account. And your emails will go into your Gmail account’s folder.

#4: Connect Similar Accounts in Outlook

Open your Outlook.
Head to the “File” tab and choose “Add Account”.
Provide again login details of the Gmail account.
And successfully your account connected to convert MBOX file to PST.

#5: Transfer Emails from Gmail to Outlook

Gmail account will appear here, now select the folder which have MBOX file data and drag and drop it into the Outlook account’s folder. And your MBOX to PST file conversion process is successfully done.

Setbacks of Manual Methods

The first method doesn’t allow users to export MBOX files to PST format in bulk at the same time.
Users have to follow the same process to complete MBOX to PST conversion for each data file.
The original folder hierarchy will not be maintained during the process, users may face data loss.
The second method contains the risk of data loss and missing your crucial file due to multiple steps.
Also, multiple working steps and phases make the process lengthy and time-consuming.
Working Thunderbird, Gmail, or Outlook account is required to convert MBOX file to PST format.
Not suitable for professional and confidential data.

Suggested and Reliable MBOX to PST Conversion Tool

If you are using the MailsWare MBOX Converter Tool, then you don’t need to go through lengthy processes. This brand provides users with reliable products. In this software, you will see multiple file migration features (bulk conversion).

It also allows you to select a destination path, which is an excellent feature. Users can easily save data to their preferred location. You can also convert MBOX to PDF, TXT, CSV, and more with the 35+ multiple saving options. So, by using this professional method, you can quickly convert MBOX file to PST file format.

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How to Export MBOX to PST Format in Bulk? All Steps

Download and run the software to convert MBOX to PST.
Choose the “Select Files” or “Select Folders” options to add files/folders.
After that, choose the required folder.
Now, select the “PST” file format from the saving options.
Enable filters to convert MBOX to PST file selectively as per choice.
Select the location from the machine to download your output data file.
Then, click on the “Next” button to convert MBOX file to PST.

Advanced Capabilities of this Best Solution

Offers faster and easier steps to work with even large amount of MBOX files.
It is capable of completing MBOX to PST conversion in one go with safety.
Ensures to retain the originality of the entire data during the conversion.
Offers dual options to upload data in bulk to smoothly complete the process.
Manages all the corrupt data that might occur in manual filing systems.
Preserves the entire data throughout the conversion and keeps it same every time.

Conclusion

After reading this article, you are completely informed about the manual or automated method to convert MBOX file to PST format. Users need to understand that the manual method is a very lengthy and time-consuming process. On the other hand, if you go for the automated solution, you can quickly convert MBOX to PST file format. Also, non-technical users easily use this software because of the user interface.