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Convert MBOX to PST

Convert MBOX to PST
Convert the email database from MBOX to PST format for Microsoft Outlook. Keep the exported data intact during the fast and safe conversion. Organize the resulting data files in the way convenient to you.
Version: 4.21 released on May 11, 2023.
(4.5 / 825 reviews)

Convert MBOX to PST for Outlook
You can download a free limited version down below

Converts the email database from cross-platform MBOX format to PST for Microsoft Outlook. Preserves all the data and metadata during the quick and easy conversion process. Automatically organizes the resulting data files into folders in a desired manner.

Main features

  • Supports all types of MBOX files, all versions of Outlook starting from 2007, and all versions of Windows.
  • Works quickly with any number of MBOX files of any size to be converted at a time.
  • Preserves email metadata and properties, images, and attachments of all extensions.
  • Allows you to convert MBOX files smaller than the required size.
  • Selectively converts messages with or without attachments.
  • Maintains folder structure during the conversion.
  • Creates multiple PSTs or folders in the destination PST file using ready-made macros.
  • Allows you to automatically arrange resulting PSTs into folders during conversion.
  • Splits final PSTs according to size or year.
  • It can automatically save each MBOX file as a separate PST.
  • Can move converted source files to a different folder.
  • Exports invalid messages to an indicated folder if desired.
  • Supports batch conversion and running on schedule in the converter Professional Edition.

What is the MBOX format?

MBOX is an email file format used to store multiple messages. These can be all the emails from a mailbox or a folder. This format is used by many email clients, such as Thunderbird, Opera Mail, and Apple Mail. MBOX files are typically used to back up and archive emails.

The MBOX format is also used for transferring message databases, like in Google Takeout.

What is the PST format?

PST is an internal Microsoft Outlook data file format to store multiple emails, contacts, calendar items, tasks, and notes in one file. PST files are used for backup, archiving, and transfer purposes.

What is the difference between MBOX and PST?

There are 2 principal differences between MBOX and PST data files:

  • The email client they are associated with. MBOX is used by many different email clients, whereas Microsoft Outlook only uses PST to store multiple data.
  • MBOX contains only email message databases, while PST can contain different mailbox items.

Why do you need to convert MBOX to PST?

There are several important reasons to convert MBOX to PST:

  • To store and open mail from a different email system in Outlook, because Outlook uses PST as its internal format.
  • To switch from an MBOX email client to Microsoft Outlook, which uses PST files.
  • The PST format offers different ways of organizing data, while MBOX can only store the contents of an email folder as a chain of emails.
  • MBOX to PST converter is useful for migrating email archives from different email applications to Outlook and Exchange Server mailboxes. The utility recognizes email labels and can then recreate the Gmail folder structure in a PST file or use the labels to assign message categories in Outlook.

How to convert MBOX to PST manually

It is not possible to convert MBOX to PST without third-party tools. You can try a workaround, such as connecting an email address from an MBOX client to your Outlook profile and then exporting messages to a PST file with the inbuilt Outlook tools.

This solution is complex and may not work correctly. Furthermore, it can be prone to errors and data loss.

Pitfalls of online MBOX to PST conversion

Converting data files online can be risky. Online converters are not secure, as the user's data may be compromised. The quality of the conversion may be inconsistent, and you may lose some of the original information, such as email properties, headers, and attachments. These tools usually don't offer advanced options, such as preserving the source folder structure.

Also, online converters may not be able to handle large source files, and the conversion process may fail. You must have a stable Internet connection. Converting multiple files may take too long and cost too much.

How to convert MBOX to PST automatically

This software guarantees fast, easy, and secure email conversion on your local machine. It is a great tool for those who have switched from an MBOX email client to Microsoft Outlook or need to transfer their messages between computers or email accounts.

Benefits of the automatic conversion from MBOX to PST

Automatic MBOX to PST conversion has many advantages. It provides a user-friendly interface and supports multiple file conversion; preserves email metadata and folder hierarchy; can convert very large source files or smaller than the specified size.

The utility makes it easy to select, organize and search converted messages. It can filter emails by attachments and mark them as unread. It arranges the messages into multiple resulting files or folders, automatically created by message fields or for each source MBOX.

For greater convenience, converted source files can be moved to another folder to avoid duplicates when repeatedly converting from the same location.

Steps to convert MBOX to PST

  1. Launch the utility either separately or from the Outlook ribbon.
  2. Select the MBOX file or folder you want to convert. You can also include subfolders if necessary.
  3. Locate the destination PST file or folder where new PSTs can be created with the help of predefined macros. The same macros can also be used to create new folders in an existing PST.
  4. To create individual folders for each MBOX, check the corresponding box.
  5. In the Advanced tab, enable the additional options you want: "Add Internet headers," "Create categories from Google labels," "Mark converted messages as unread," and "Create folders from Google labels."
  6. Select which messages to convert: all messages, with attachments or without attachments.
  7. Specify the size to skip the source files greater than.
  8. Specify the maximum size of the resulting PSTs, so that the utility will split the final files accordingly.
  9. Specify the folder to move the converted source files, if required. In this case, when you rerun the converter from the same location, target PSTs will not contain duplicate messages.
  10. Run the conversion process.

Once the conversion is complete, the PST files can be imported into Microsoft Outlook.

Bulk MBOX to PST conversion

The command line app in the Professional Edition of the converter extends the tool's capabilities and provides greater flexibility for mass mail transfer and migration. This option allows you to schedule conversions or perform them using batch files and scripts for any number of users in any organization. The Professional Edition also offers free support to help you create custom scripts and scenarios to suit your specific needs.


Can I convert multiple MBOX files at once?

Yes, you can select a folder with multiple files to convert. If you need to convert MBOX files from different folders at once, use the command line app in the Professional Edition.

Does the converter export email images and attachments during the conversion?

Yes, the utility converts all data from MBOX emails unchanged. Images and attachments from a message are saved as they were originally sent.

How can I export my Gmail emails to Microsoft Outlook?

If you already have a Gmail MBOX file via Google Takeout, exporting emails to Outlook is a very simple task. Use this converter, and then import the resulting PST into your Outlook mailbox.

How can I export my emails from Mozilla Thunderbird to Microsoft Outlook?

First, save emails from Mozilla Thunderbird in an MBOX data file. Then convert MBOX to PST with this utility and import the final PST to Outlook.

How is the MBOX to PST conversion different from importing MBOX into Outlook?

Indeed, there is another useful tool for importing MBOX in Outlook that is similar to the MBOX to PST converter. The differences are the following:

  • The converter allows you to save the MBOX messages in existing or new PST files. Importing MBOX messages adds them to an existing Outlook account.
  • When converting MBOX to PST, you can create and name folders and PSTs to sort emails by date, sender, recipient, subject, and other message fields.
  • When converting, you can limit the maximum size of the PST files created.

Can I convert MBOX files to other formats, such as EML and MSG?

To convert MBOX to individual email formats, use the MBOX to EML and MBOX to MSG converters.

OutlookFreeware.com Outlook Ribbon
All utilities easily integrate with Outlook (optionally)

* This utility is for non-commercial home use only. It will not run in domain enviroment. Some of the described features and support for domain enviroment are available in advanced version of the utility only. Free version may have additional limitations.

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