How to Open MBOX File on PC?Best Guide for You

Open MBOX File on PC

The MBOX file format, commonly associated with email clients like Apple Mail and Mozilla Thunderbird, poses a challenge for Windows users, as the native email client, Microsoft Outlook, doesn’t directly support MBOX files. However, there are several methods available to open MBOX files on a PC, allowing users to access and manage their email content. Below is an overview of the general steps involved in this process.

MBOX is a widely used mailbox file format that stores email messages in a concatenated format. While prevalent in macOS-based email clients, Windows users may need to explore alternative methods to open and view the content of MBOX files.

Reason to Open MBOX File On PC

  • When transitioning from one email client to another, especially from macOS-based email clients like Apple Mail or Thunderbird to a Windows environment, users may need to open MBOX files to migrate their email data.
  • Users may have backed up their email data in the MBOX format for archival or recovery purposes. Opening MBOX files on a PC allows them to access and restore specific emails or entire mailboxes.
  • Archived email data in MBOX format may contain important historical records or information. Opening MBOX files on a PC enables users to view and retrieve archived emails when needed.

How to Open MBOX File on PC Manually?

Opening an MBOX file manually involves using a text editor to view the raw contents of the file. This method is more suitable for advanced users who are comfortable working with text data. Here are the steps to manually open an MBOX file on a PC:

  • Locate the MBOX file that you want to open on your PC. This file may contain the archived emails or mailbox data.
  • Select a text editor that can handle large text files and provides syntax highlighting. Notepad++ is a popular choice for this purpose, but you can use any text editor of your preference.
  • Right-click on the MBOX file and choose “Open with” from the context menu. Select the text editor you’ve chosen. If the text editor doesn’t appear in the list, you may need to select “Choose another app” and manually select the text editor.
  • The MBOX file is a plain text file with a specific structure. You’ll see the contents of the file, including email messages, in a raw, unformatted text form.
  • MBOX files consist of email messages separated by a specific delimiter. Each email starts with the “From ” line, which signifies the beginning of a new message. You’ll notice that the email headers and body are visible in the text editor.
  • Use the scroll bar or search functionality within the text editor to navigate through different emails in the MBOX file. Each email is demarcated by the “From ” line.
  • If you need to copy or extract specific information, such as email content, addresses, or attachments, you can do so manually from the raw text.
  • If you make any changes or edits to the MBOX file, save the file using the text editor. However, be cautious when modifying MBOX files manually, as incorrect changes may corrupt the data.

Drawbacks of Using Manual Solutions

  • Manual solutions involve viewing raw, unformatted text, making it less user-friendly, especially for individuals who are not comfortable working with technical or text-based interfaces.
  • Opening MBOX files manually doesn’t provide features for managing emails, such as sorting, searching, or organizing. Users can only view the content without any email client-like functionalities.
  • Making manual edits to MBOX files carries a risk of unintentional data corruption. Users may accidentally alter the structure or content of the file, leading to issues with the email data.
  • Manually opening MBOX files doesn’t offer a straightforward way to interpret and view email attachments or multimedia content, limiting the user’s ability to understand the complete context of the emails.
  • Unlike dedicated email clients or conversion tools, manual solutions lack advanced search and filtering capabilities. Users may find it challenging to locate specific emails or information within the MBOX file.

How to Open MBOX File on PC Via Automated Solutions?

Opening MBOX files on a PC can be facilitated by utilizing Online MBOX Viewer, which provides a convenient way to access and explore the contents of MBOX files without the need for local installations.

Benefits of Using Automated Solutions

  • It provides the flexibility to access and view MBOX files from any device with an internet connection and a web browser. This accessibility is valuable for users who need to view email content on the go.
  • It eliminates the need for users to install additional software on their devices. This simplifies the process and reduces the time and effort required for setup.
  • This wizard features user-friendly interfaces that make it easy for users, even those with minimal technical expertise, to navigate through emails, view attachments, and understand the structure of the MBOX file.
  • It often provides rapid file processing capabilities, allowing users to quickly upload MBOX files and view their contents without delays. This can be advantageous when time is of the essence.
  • They are typically platform-agnostic, meaning they can be accessed from different operating systems such as Windows, macOS, or Linux. This versatility ensures compatibility across various devices.


In this tutorial, we have shared the reliable process to open an MBOX file on a PC manually and using automated solutions. As manual solutions have a batch number of limitations and are not a reliable choice for beginners. So, we suggest you opt for an automated solution to skip the installation process and get accurate results without losing any information.

Also Read: How to Open EML Without Outlook?

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