When discussing email and email management software, it's impossible to overlook Outlook. It stands out as a renowned and widely favored email client for both Windows and Mac users. Furthermore, it holds the reputation of being the top choice among businesses, corporations, organizations, and individuals who contend with over 100 emails daily.

While MS Outlook does have a version available for Mac users, there are instances when Mac users find it necessary to transform their PST files into MBOX format. What prompts Mac users to make this conversion from Outlook PST to MBOX?

Reasons Why You Need to Convert PST to MBOX

Listed below are the primary reasons for considering the conversion of Outlook PST files into the MBOX file format, which is compatible with various email clients such as Apple Mail, Mozilla Thunderbird, Eudora, SeaMonkey, Netscape, Evolution, Spicebird, and many others.

  • For many regular users, MS Outlook can become a costly option in the long term due to the requirement to purchase a licensed version of MS Office at some point. While you can initially download MS Outlook and register to assess its capabilities during the trial period, eventually, acquiring a license becomes mandatory. Consequently, many users start considering a switch to free MBOX-compatible email clients. Desktop email clients that offer open-source or no-cost alternatives on the internet become increasingly popular among individual users.
  • PST files in MS Outlook can become corrupted, rendering them inaccessible. When it comes to Microsoft products, the built-in methods for addressing file corruption or damage are limited in effectiveness, and PST files are primarily designed to function within the Outlook environment. Consequently, if a PST file becomes corrupted, you may encounter prolonged difficulties.
  • Outlook users are limited to using the Windows OS, while MBOX files can be accessed on a variety of operating systems, including Windows, MacOS, Linux, and more.
Features PST (Personal Storage Table) MBOX (MailBox File)
Operating System It's available on every iteration of the Windows operating system. You can access it on systems running Windows, MacOS, or Linux, including various distributions.
  • PST files are exclusively compatible with MS Outlook but can also be imported into Microsoft platforms such as MS Exchange Server, Office 365, and Outlook for Mac. Additionally, free tools like Kernel PST Viewer enable you to access and view PST emails.
  • Also, you can use free applications like Kernel PST Viewer to view PST emails.
  • The MBOX format finds application in various email clients, including Thunderbird, Apple Mail, Eudora, Entourage, Postbox, PocoMail, Netscape, Spicebird, Claws Mail, Opera, PowerMail, Sylpheed, Evolution, SeaMonkey, Mulberry, GyazMail, Sparrow, Gnu, and The Bat!. Additionally, Gmail utilizes MBOX format for email backups. Furthermore, users can employ free tools like Kernel MBOX Viewer for viewing MBOX emails.
  • Also, you can use free applications like Kernel MBOX Viewer to view MBOX emails.
Cost Outlook is not made available for free. You have to buy it.


You can download any Linux distro and install Mozilla Thunderbird on your system to open the MBOX file, without really spending anything.


Now that you have a grasp of the reasons and occasions when someone might require the conversion of an Outlook PST data file to an MBOX (MailBox file) and a fundamental understanding of the distinctions between these two file formats, the next question is: How can you go about converting the PST file to MBOX?

To perform Outlook PST to MBOX (Mozilla Thunderbird) file conversion, we'd suggest using Kernel for Outlook PST Repair, an advanced tool created to handle all sorts of issues or needs associated with Outlook PST data file.

The tool is specially designed to scan and repair the damaged/corrupt PST file. Also, it allows users to convert the repaired PST files into MBOX and other different file formats. In this guide, we will demonstrate the process of converting a PST file to MBOX using the Kernel for Outlook PST tool.

  1. Please acquire the PST to MBOX converter tool and proceed with its installation on your computer.
  2. When you open the tool, a welcoming window will pop up on your screen. launching the tool
  3. Select the file you wish to restore or repair, then click on the "Next" button." click Next Note: From this section, you can also add multiple PST files.
  4. In the following stage, review the provided information, and then select the "Finish" option to initiate the repair process. start the repairing process
  5. After the repair process has finished, you'll have access to the file's folders. Simply click on a folder to preview its emails or items within the tool. Click any folder to preview its emails/items in the tool Note: You can also double-click the email attachment here to preview it.
  6. To convert this file into MBOX format, begin by selecting the Save button located in the upper left corner of the tool. In the subsequently opened window, opt for "MBOX file" and then click "Next.".  click Next
  7. In the following stage, choose the precise filters you wish to employ for the PST file, then proceed by clicking on "Next." apply to the PST file
  8. Please choose the Email client to handle the MBOX file, and indicate the desired destination for saving the MBOX file. To finish the process, click on the "Finish" button. Click Finish Note: To remove deleted items from the file, just check the box labeled "Exclude deleted items."
  9. A notification wizard will appear on your screen, displaying the message "Items have been saved successfully." To finish the process and close the wizard, just click the "Ok" button. click Ok to close the process With this method, you can efficiently perform PST file repairs and convert them into MBOX files.

Final Words

Converting PST files to MBOX format may be essential when you need to access your Outlook data using Mac email clients. However, the conversion can be quite challenging if your PST file is damaged and you're not employing the correct approach. In this article, we explore a solution that offers an alternative method for exporting your Outlook PST data to MBOX file format. This solution, called Kernel Outlook PST, not only repairs corrupted PST files but also converts them to various file formats, including MBOX.

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