OST to MBOX Converter

Convert OST and PST files to MBOX quickly and easily.

  • Convert emails with attachments and attached emails
  • Convert corrupted, orphaned, archive, password-protected, and encrypted files
  • Compatible with all versions of Outlook, without requiring Outlook to be installed
  • Support for the latest Mozilla Thunderbird version

OST to MBOX Portable Version (.zip) - No installation required

OST to MBOX Converter

When to use OST to MBOX Converter

OST to MBOX Converter Report

Converting OST files to MBOX format

The OST to MBOX Converter is a valuable tool for anyone who needs to convert their Outlook data to a more compatible format. It allows you to easily convert your OST and PST files to MBOX format, which can be used with a variety of email clients and other applications. This can be particularly useful if you're migrating to a new email client or operating system, or if you're simply looking to make your data more accessible.

  • Converting large or small OST and PST files to MBOX format
  • Creating separate folders for each OST file
  • Preserving the original folder structure of your data
  • Ignoring empty folders to save time and space
  • Saving internet transport headers for added convenience
  • Generating reports for the data conversion process
  • Converting .pst to .mbox and .ost to .mbox in just one click

Technical Specifications

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About Product

OST to MBOX Converter
Version: 1.16
License: Named User, Single/Concurrent Use
Release Date: May, 2023
Download: Portable version and Installer
System Requirements

System Requirements

Processor: Intel-compatible (x86, x64)
Memory: 1 GB minimum (4 GB recommended)
Hard Disk: 50 MB for installation files
Operating System: Microsoft® Windows 11 / 10 / 8.1 / 8 / 7
Prerequisites: Microsoft .NET Framework 4.7.2 or later

Product Related Articles

Convert .pst and .ost files to Thunderbird (MBOX)

The normal Thunderbird import process requires that you have a compatible version of Outlook installed on your computer. If you do not have Outlook installed, there are alternatives as noted below.

Convert MBOX to PST

This tool converts MBOX (Thunderbird, Apple Mail, etc.) files to Outlook. Maintains the on-disk folder structure of the mbox mailbox after conversion. Import mbox into existing or a new Outlook Data File (.pst and .ost).