Launched January 6, 2026
DataVare OST to MBOX Converter Software

DataVare OST to MBOX Converter Software

The best OST to MBOX Converter by DataVare

One time fee256 impressions#1442 of its week1 comment

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  • Sachin Kumar· 3mo ago

    I had an old OST file that I wanted to use in Thunderbird, but I needed it in MBOX format first. I looked through a few discussions on Reddit and Quora before deciding to try this converter. The setup was simple, although I wish the free demo allowed a little more testing. I converted my mailbox without any major issues, and the MBOX file imported into Thunderbird just fine. Overall, it made the migration much easier than doing it manually.

The DataVare OST to MBOX Converter Software is a safe and secure way for convert large OST files to MBOX files easily. It is simple and quick to convert several OST files to MBOX files without wasting time. The data is preserved when the OST file is converted to MBOX format, regardless of its size. This software can be used by anyone who has never used a computer. Converted MBOX files can be stored anywhere. Users can convert OST files to MBOX format. Fixing or converting OST files to MBOX files won't result in data loss. It works with Microsoft Outlook versions 2021, 2019, 2016, 2013, and others. This software is available for free analysis and testing. Numerous Windows OS versions, such as 11, 10, 7, XP, Vista, and others, are compatible with it. Apple Mail, Mozilla Thunderbird, PostBox, GNU, Eudora, and other MBOX email programs are compatible with it. OST files that are password-protected can be converted to MBOX files without losing any data.

DataVare OST to MBOX Converter converts Outlook OST files to MBOX format preserving all data.

for
Anyone needing to migrate Outlook data to other email clients, including non-technical users.
pricing
free
works withMicrosoft OutlookApple MailMozilla ThunderbirdPostBoxEudora

Key features

6 features of DataVare OST to MBOX Converter Software
  • Convert Only OST to MBOX — Exports entire OST files to MBOX regardless of file size or Outlook version.
  • Export Selected Databases — Manually select specific OST files or folders for conversion via a wizard.
  • Preserve Email Headers & Hierarchy — Keeps all email headers and folder structure intact during conversion.
  • Preview Selected OST Database — Shows a folder-by-folder preview of the OST contents before conversion.
  • Save Conversion Locally — Creates a new MBOX file for each conversion, saved to a user-chosen folder.
  • High Compatibility — Supports all Outlook versions and works with MBOX-compatible clients like Thunderbird and Apple Mail.

Use cases

  • Migrate Outlook archives to Thunderbird for cross-platform access
  • Move corporate Outlook data to Mac-based email clients
  • Batch convert multiple OST files for legal e-discovery
  • Extract password-protected OST data without loss
  • Test email migrations on a free trial version

DataVare OST to MBOX Converter Software FAQ

Do I need Outlook installed to run the converter?+

No, the application is independent and does not require Outlook.

Can the tool handle password-protected OST files?+

Yes, it can convert password-protected OST files without data loss.

Is there a limit on the size of OST files it can convert?+

There is no size limitation; the tool converts large OST files in minutes.

What operating systems are supported?+

Windows 11, 10, 8.1, 8, 7, Vista, XP and other Windows versions.

Summarized by DevHunt from datavare.com · Sep 28, 2026. Details may change; check the official site.