DotStella OST File Converter

A comprehensive toolkit for exporting OST emails, contacts, and other data, without having to use Outlook.

  • Convert OST to Outlook PST, HTML, MBOX, EML, TXT, CSV, etc.
  • Transfer bulk Outlook OST file with all attachments directly.
  • Dual Search option to find data inside the multiple OST files.
*The free download is primarily for testing purposes and includes a preview of messages as well as restricted OST data conversion.

The Best OST File Converter with a Wide Range of Features

The OST file converter software is a well-designed application for transferring selected Offline Outlook data file with accuracy. The user can also backup OST files to several email clients with all information.

  • Migrate offline OST files to Office 365 , Gmail, and IMAP.
  • Accurately export data from the OST file without size restrictions.

Watch Video

convert OST file data

It's self-contained and works with any version.

It can import things from an offline Outlook data file without loss. It is a standalone programme that exports OST files to several file formats without installing MS Outlook. The application extracts emails from OST files of any Outlook edition.

  • Extract email from OST file without MS Outlook installation.
  • Compatible & work with all the available Windows OS editions.

More Awesome Features of OST Converter Wizard

Convert OST File to Useful Formats

The OST converter Wizard is a valuable program to convert OST files into multiple file formats. The user can convert OST to EML, OST to MBOX, OST to PST, OST to PDF, OST to HTML, OST to TEXT, OST to CSV, OST to vCard, and OST to ICS. The tool can export data from the OST file along with the attached files.

Preview OST Data Separately

The OST file converter is an IT engineer designed application with the latest algorithm. It comes with several in-built functions one of them is Preview Mode. It allows users to View OST file data with all properties. One can also open & save OST file attachment individually on the system for some other purpose.

Backup Offline OST to Cloud Server

The software is capable to migrate OST files to email clients with attachments. It helps users to perform OST file migration into a webmail account with accuracy. The user can export OST to Gmail, OST to Office 365, and OST to IMAP without any loss. It is a direct & effortless process that doesn’t require technical knowledge.

Dual Advanced Search Mode

The program to convert offline Outlook data OST to different formats is an excellent solution. It is convenient to move the selected OST file to different file formats. It provides two search modes – Quick & Advance search to make OST file conversion an easy work. A quick search finds the text from the OST file and advance search sort OST data through filters.

Export OST File Independently

Using the OST conversion tool, the user can extract data from Outlook .ost file without Outlook installation. The tool is a standalone application and capable to perform OST file transfer process without any external installation. The user has the freedom to save the final results at the desired location after OST email conversion.

Supports Large or Oversized OST File

DotStella OST converter wizard is the best solution for converting multiple OST files to different file formats and new email service. It is a flawless product that works smoothly. The software can convert large OST files of any size. It transfers OST file data to other formats irrespective of file size limitations.

Retains Properties & Attributes

OST file converter tool is a 100% safe solution for extracting emails from offline OST with attachments. The tool preserves OST file properties such as images, signature, email headers, links, and other things. The OST transfer tool accomplishes the Outlook data file conversion without missing even a single detail.

Works with All Windows OS

The easy-to-use software to convert OST files to new file formats is designed for Windows OS only. One can download & run an OST export tool on all the available Windows versions to move Outlook offline OST file. This product doesn’t support any of the Mac editions for OST file conversion. It is the easiest way to convert OST files.

Software Walkthrough
  • Step 1
    Add OST Files & Folders

    Click the "Open” icon to add all the OST data.

  • Step 2
    View All OST Files

    Select all the required items to preview in content.

  • Step 3
    Export the OST Files Database

    Once the OST file & folders are loaded » Click Export to save.

Add OST Files
Add OST Files
preview OST Files
export and save OST data
Making Your Choice Easy

Converts All OST Folders and Files


  • For 2 PC / Laptop, Personal License
  • Provides option to preview OST messages before exporting them
  • Free Lifetime Upgrade Included
  • Free Product Support Included
Best Seller

Converts Unlimited OST Folders and Files

$99 $49

  • For 10 PC / Laptop, Standard License
  • Provides option to preview OST messages before exporting them
  • Free Lifetime Upgrade Included
  • Free Product Support Included

Converts All OST Items


  • For 50 PC / Laptop, Pro License
  • Provides option to preview repaired photos before saving them
  • Extracts thumbnails of badly corrupt photos
  • Repairs multiples corrupt photos in one go
  • Recovers lost or deleted photos
Client′s Review for OST Conversion Tool

I have no experience in moving Outlook data files OST to PST format. I accomplish this process with the OST File exporter software and it works. All of my OST files exported to PST format.


Louise, London

I really liked the advance search function from the OST conversion tool to differentiate OST emails by date, time, to, from, content body and more.

Henry Jones

Henry Jones, New York

I have been assigned work to change all OST files to PDF format. I thank DotStella for the OST conversion software that can be used to easily move offline OST files to PDF documents.


Alex, UK

Technical Specifications
About Product

dotstella box image



Release Date

March, 2021


Single User


Personal, Business, Enterprise

Language Supported


System Requirements

System Requirements



Operating System

Windows 11, 10, 8, 8.1, 7


512 MB minimum (1 GB recommended)

Hard Disk

100 MB Free Space

Start Using DotStella OST Converter Today.
*Free Download is only for evaluation and provides preview of messages and limited conversion of messages
Start Using DotStella OST File converter Today With Our Free Trial
The user can convert multiple .ost files to PDF at once with attachments.
Yes, this best OST converter software is capable of converting multiple OST files to HTML format.