MBOX to PST Converter

Convert MBOX (Thunderbird, Apple Mail, etc.) to Outlook.

  • Maintains the original folder structure and metadata properties after the conversion
  • Convert emails with attachments and attached emails
  • Accurate result without any data loss during conversion

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

MBOX to PST Converter

Convert MBOX into existing or a new PST file.

Maintains On-Disk Folder Structure

Search a folder and all of its subfolders for emails and maintains the on-disk folder structure of the emails files after conversion.

No limitation on file size

It's recommended to create a new pst-file for every 10GB or so or performance will drop exponentially.

Preserves All Message Properties

All MAPI and metadata properties, HTML formatting, attachments, images, headers will be retained in PST file after conversion.

Command Line Support

Have a lot email files to import, but process requires more manual intervention than you want? Automate it with command line options.

Compatible with all Outlook versions

Microsoft Outlook can be either 32-bit or 64-bit. We have both 32-bit and 64-bit version of software, you should match the bitness of the Outlook and not the Windows OS.

1-Click Email Converter

Convert Thunderbird MBOX to Outlook in single click. The program generates report for the data conversion process.

Command Prompt

Command line options

The command-line options in the following table are available with Technician License

mbox2pst64.exe   filename   [/pst:destination]   [/f:folderName]   [/p:password]   [/d:storageDispalyName]


Specifies the files to import. A filename mask can be applied,
e.g. c:\source_folder\*.msg


The exisiting or a new pst file name. If does not set it, used default Outlook storage.


The destination Outlook folder name, default IPM Root Folder.


The PST file password, optional.


The display name of the Outlook data file, optional.

Technical Specifications

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About Product

MBOX to PST Converter
Version: 1.02
License: Free, Personal, and Commercial use
Release Date: Sep, 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