SysTools Outlook to MBOX for Windows

By SysTools
Trial version
User Rating

Used SysTools Outlook to MBOX for Windows?

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Editors’ Review

Download.com staffFebruary 24, 2026

This utility converts Microsoft Outlook PST files into the widely compatible MBOX format. It processes entire PST mailboxes, preserving email content for use in clients like Thunderbird and Apple Mail.

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Trial version

Pros
- Supports both ANSI and Unicode format PST files
- No file size limitations for source or target files
- Displays live conversion status within the user interface
- Compatible with all versions of Windows Operating Systems
- Maintains folder hierarchy during the conversion process
Cons
- Processes only one PST file at a time
- Does not support macOS or Linux operating systems
- Lacks options to filter emails before conversion
- Converts only emails, not contacts or calendars
- Generates a single MBOX file for the entire PST

SysTools Outlook to MBOX for Windows

By SysTools
Trial version
User Rating

Used SysTools Outlook to MBOX for Windows?

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Full Specifications

GENERAL

Release: October 1, 2014

Latest update: February 24, 2026

Version: 1.0

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows Server
Windows 8
Windows 2000
Windows 10
Windows Vista
Windows 7
Windows XP
Windows 2003
Windows NT
Windows ME
Windows 98

Additional Requirements: None

POPULARITY

Total Downloads: 123

Downloads Last Week: 0

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Last Updated

User Reviews

5/5

1 User Votes

Best Software to Convert Outlook PST to MBOX. Perfect!
JustinHansen0007November 8, 2017
Pros
1. SysTools PST to MBOX Converter Software is fast & reliable 2. Complete Conversion of Outlook PST to MBOX 3. Virus Free 4. Easy to Use 5. Quick Install on latest Windows Platforms such as 10, 8, 7 or so on. 6. Supports Both ANSI & UNICODE PST file 7. Single Panel Interface
Cons
Free or Demo Version of Software Supports conversion of only first 15 Outlook Emails to MBOX.
Summary
Few Days Ago, I have been facing issue with my Outlook email client after installing October 2017 update. I tried every every hacks to fix it all. But fails to do so. The I decided to move on to free email client such as Thunderbird, Opera Mail, SeaMonkey, Eudora. But I found thunderbird quite useful and easy to use email client. Now I want to Move my data from Outlook to Thunderbird. After deep researching on web, I found the ways to move on to Thunderbird. first one describes the manual way and second one automated solution. I tried manual solution as it is free. But I was unable to export complete data to Thunderbird via manual Solution. Then I download SysTools Outlook to MBOX Converter Software. I used the software demo version and find it quite useful and authentic solution. Its interface somewhat resembles the Outlook interface. Therefore, I found less difficulty in handling the software. So, it is great feeling to use a highly designed procured solution.

Developer’s Description

Convert Outlook PST -emails to MBOX files in batch with or without folder hierarchy.