Regain OST to MBOX Converter

Convert OST files to MBOX format including with all folders

Download trial version and migrate 30 items per folder free

  • Convert OST Emails, Contacts & Calendars to MBOX file format
  • Selectively converts complete OST mailbox data to desired formats
  • Option to save convert OST data in PST, MBOX, TGZ, EMLX, PDF, EML, MSG, HTML, ICS, VCARD formats
  • Have Option to Split Oversize PST file
  • Provides fast and safe recovery of corrupt OST data without data loss
  • Working interface of this software is very user friendly & quite fascinating
  • Offers an option to save the converted OST files to desired location
  • No file size limits restrictions; any large OST file can be converted into MBOX
  • Keeps all inline images, attachments intact & export OST data to MBOX
  • Migrates OST files to Gmail, Yahoo Mail,, GoDaddy, Amazon Workmail, Office 365 and MS Exchange Server
  • Comes with a free trial version so users can test it directly before purchase

OST to MBOX Converter - Features

Convert OST to MBOX & other File Types

Regain OST to MBOX Converter allows users to upload Exchange Outlook emails, contacts, calendars, tasks, notes, etc., to the software so that they can be fully converted to MBOX or other file formats. Apart from the MBOX file format, this software also can convert user's OST data to PST, EML, EMLX, PDF, TGZ, MSG, HTML, ICS, and VCARD formats without any hassle. Read more...

Bulk Conversion of OST files into MBOX

OST to MBOX Converter provides a dual option to load Exchange Outlook OST mailbox items i.e., select a single OST file or the complete folder having multiple OST files. It helps users to convert several files and folders into MBOX file format in just one attempt. If users need to convert multiple files, there is no need to convert files one by one; select the desired files/folder, and the program will completely convert all the data in one go.

Corrupt OST File Conversion

One of the best points of this tool is that it also allows the conversion of highly corrupted or damaged Exchange Outlook OST files/folders. The software securely repairs corrupt files of users and allows them to convert into MBOX files or their desired file formats. If any users have corrupt OST files, they can easily use this tool to repair and convert their corrupted OST files.

Open Encrypted OST file

OST to MBOX Converter supports the conversion of OST files/folders which are encrypted or protected with a password. Sometimes, users put passwords on their important files to protect them from unauthorized access. Software efficiently converts these files as it does not require any password for conversion. But to open the files, users must enter the password of these specific files after conversion.

Recover Permanently Deleted Emails

It is efficiently recovers permanently deleted emails with all its elements successfully. This software allows users to recover permanently deleted files and save them in various file formats at the user's defined location on the desktop. These recovered emails can be accessed on any version of MS Outlook email clients.

Include attachments and email property

OST to MBOX Converter is a better way to convert OST files data to MBOX emails format with its all attachment and property emails, the email properties such as to, cc, bcc, from, subject, time, date, etc. This software smoothly and easily supports all MBOX-supported email applications and allows users to access data on any application without any issues.

Preview of Emails before Saving

The tool allows the users to view the OST file content before the conversion process begins. Users can see the entire OST data items in detail on the software preview panel by double-clicking on specific file items. The ‘Preview’ feature allows the users to verify the selected OST files, inspect if they have chosen the right files, and then start the conversion process.

Supports all MBOX Supported Email Client

It is embedded with a feature to convert OST files to MBOX format that supports various email clients’ applications. After the successful conversion of selected files, this tool allows users to open this converted OST file on different MBOX-supported email clients like Thunderbird, AppleMail, Entourage, Pocomail, and many more so that users can access the data present within the files.

Imports OST Files to Office 365 Account Directly

Software executes direct conversion of Offline OST data to an Office 365 account. To complete this task, users must enter their respective accounts' correct login details. Once users enter their username, email ID, and password, the software imports OST files to Office 365 accounts without neglecting data security.

Directly Import OST Files to Cloud Server

It is an advanced tool that allows users to directly import multiple OST files to Cloud Server in just a few easy steps. The software needs the correct login details of the user's email account to start the migration process. The tool also supports all the latest email versions, so enter the login credential and migrate the entire OST data to Cloud Server. Users can Import OST files to Many email platforms such as Gmail, Yahoo Mail,, GoDaddy, Amazon Workmail, Office 365, and MS Exchange Server. Know more...

Keeps the Original Email Meta Data intact

It can convert unlimited OST files to MBOX file format while retaining their original email Meta Properties, including the attachments. The software doesn’t change any data contents and keeps the Metadata properties intact such as Cc, Date, From, Date, Subject, To, Bcc, etc., during the whole OST to MBOX conversion.

Supports all Outlook and Windows version

Software compatible with all versions of Outlook including Outlook 2021, 2019, 2016, 2013 (32-bit and 64-bit versions)/ 2010 / 2007/ 2003/ 2002, and 2000. The users will not face any hassle while performing a direct conversion from OST to MBOX on any Windows operating system, as it also supports all versions of Windows, including Windows 11, 10, 8.1, 8, 7, Vista, and XP.

OST to MBOX Converter

Technical Specifications

System Requirements

  • Processor - Pentium Class
  • Memory - 512 MB
  • Hard Disk - 50 MB of free space

Version Supports:

  • MS Outlook 2021, 2019, 2016, 2013 (32 bit and 64 bit versions)/ 2010 / 2007/ 2003/ 2002/ 2000
  • Operating System - Windows 11, 10, 8.1, 8, 7, Vista, XP

Product Video

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Can I convert selected mails of OST File with this tool?

Yes, using this tool you can easily export required messages into MBOX file.

How to Convert OST to MBOX file format?

For OST to MBOX Conversion, you need to follow the step by step procedure which given below:-

  1. Download and open Regain OST to MBOX Converter Software
  2. Choose or browse desired OST files
  3. See the preview of all scanned data files and click “Export” button
  4. Select “destination path” and target format as MBOX
  5. Click “Save now” button for converted files saving

Can I convert multiple OST files at a time?

Yes, this OST to MBOX Converter software allows bulk conversion of OST file at a time.

Can I open the Converted MBOX file in Thunderbird Email Client?

Yes, this OST to MBOX Converter tool allows user to open converted MBOX file on any MBOX supported email client application like- Entourage, Thunderbird, AppleMail, Spicebird, Pocomail, Eudora, Netscape, Mulberry, SeaMonkey, etc.

How much time it takes to convert Outlook OST file to Apple Mail?

With OST to MBOX Converter, it takes less time to transfer Outlook OST files to Apple Mail. The program is designed to work smoothly and does not take much time to complete the conversion task.

Does this software compatible with Windows 11 OS?

Yes, the OST to MBOX Converter tool is designed for Windows operating systems, so it runs seamlessly on all versions of Windows, including Windows 11, 10, 8.1, 8, XP, Vista and more.

With this tool, is it possible to import OST data to Apple Mail MBOX?

Yes, it is possible to import resulting MBOX files to your Apple Mail account, after converting OST files to MBOX format without much difficulty.

Can I convert inaccessible OST files using this software?

Yes, it is possible to transfer healthy, corrupt, as well as unusable (also called as inaccessible or orphan) OST files using this OST to MBOX Converter tool.

Does this software capable to convert password protected OST file to MBOX format?

Yes, this software has capability to convert your password protected OST file to MBOX file format without any issue. But if you want to access or open the converted files, you'll need password for that.

How to convert multiple OST files with this tool?

You have to move your entire desired OST file in a folder if you want to convert multiple OST files and then open the software and choose or select “Add folder” option. And after this you can easily select your multiple OST files and convert into MBOX format at one time.

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