Free MBOX file viewer to Open, Read & View MBOX File Format Emails & Attachments Without Any Email Client Requirement.

  • View mailbox of any email clients having mbox/mbs/mbx file formats
  • Easy option of Browse, Load & Scan to view MBOX files for free
  • Display the contents and folder strcuture of multiple MBOX files
  • Horizontal & Vertical screen mode to preview data in desired view panel
  • A total of 8 different view modes like Normal View, Hex View, Header View, etc.
  • Simple user interface to navigate which can be followed by non-technical user
  • Auto-fetch database of Thunderbird and several other email clients
  • No need for email client to read MBOX files with MBOX Viewer freeware

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Compatible with all latest Windows OS

  • Download Absolutely Free: The free MBOX viewer has no hidden charges and displays all the email messages of multiple MBOX files at once.
  • Try PRO version: The PRO version is developed for users who wish to save the displayed data into PDF format. It is more like an extension of the free viewer application.

How to Use the Software to View MBOX File?

3 Simple Steps to use Free MBOX Viewer application on Windows OS

Step 1: Add MBOX File(s)

After running the software, click on Add File button. Now click Next and add the MBOX files using the Browse (...) button.

Step 2: Scan MBOX Data

The software will now scan the MBOX file(s) and quickly display them on its interface with the original formatting and structure.

Step 3: Read MBOX Emails

Now, then you can view MBOX file in 8 different view modes: Normal View, Attachments, Hex, Header, HTML, Properies, MIME and RTF View.


View Emails with Attachments

The free tool allows to view MBOX emails with proper formatting. Normal Mail View & Attachments section are provided to view the email messages and attachments separately. The emails are listed with its associated properties such as: From, Subject, To, Sent date, Received date, Size in Bytes.

Open Mailbox of Multiple Email Clients

MBOX viewer application can open MBOX mailbox files of many email clients like Apple Mail, Eudora, Thunderbird, Netscape, Entourage etc. having MBOX/MBX/MBS file formats with ease. Google Takeout & Gmail Vault backup files that are present in .mbox format are also supported.

Preview MBOX Emails in 8 Modes

The software is designed to scan and preview MBOX email messages in an orderly fashion within the preview panel. There are 8 different view modes i.e., Mail View, Hex View, RTF View, Header View, Attachments, Properties View, HTML View and MIME View. This can be used for forensics as well.

No Restriction on MBOX Files

There are no restrictions on the size and number of MBOX files that the MBOX reader tool can process. Whether the file is large in size or there are a number of MBOX files to be processed at once, this free software can deal with them easily.

No Email Client Required

MBOX File Viewer is the best solution to quickly view MBOX file on the system without going through the trouble of installing and configuring an email client. It is an stand alone application that does not require any email client for opening MBOX files.

OS Compatibility

The simple steps for loading the MBOX file with Add, Scan & Preview are easily understandable even by the non-technical users. The software is compatible with Windows 10, 8.1, 8, 7, XP. It also runs on Windows Server 2019, 2016, 2012, 2008 R2, 2008, 2003 R2, and 2003.

System Requirements for MBOX to MSG Converter

  • Support: Windows 10(32/64 bit) & All Below Versions.
  • Processor: 1 GHz Processor (2.4 GHz is recommended).
  • RAM: 1 GB of RAM (2 GB is Recommended).
  • Hard Disk Space: 100 MB of Free Hard Disk Space Required.
Product Details
  • Version: 4.0
  • File Size: 14.4 MB
  • MD5: fedacf9b6fb4e5fe19a50a59c388cefa

Installation Uninstallation     Guide



Add .mbox/.mbx/.mbs files
Scan Multiple MBOX Files
Preview All Emails
Switch Mode
Export to PDF View Only



Frequently Asked Questions

Questions Regarding Opening MBOX Files

Follow the steps to view MBOX files for free:

  • Run MBOX file viewer on Windows system.
  • Click Add File and select MBOX file option.
  • Browse and add MBOX files into the software
  • View MBOX emails and attachments in the preview panel.

Yes, the tool supports all email clients having MBOX/MBS/MBX format.

No, there is no size limitation as the software loads mailbox file of any size.

The tool itself is absolutely free for viewing MBOX files. However, it does not have any option to save the emails in a different format to local computer. The upgrade provides that functionality along with the search option.