Convert inaccessible/corrupt OST files into new Outlook PST files

Stellar Converter for OST

Join our mailing list

Stay up to date with latest software releases, news, software discounts, deals and more.

Download Stellar Converter for OST 12.1

  -  22.8 MB  -  Demo
  • Latest Version:

    Stellar Converter for OST 12.1 LATEST

  • Requirements:

    Windows 7 / Windows 8 / Windows 10 / Windows 11

  • User Rating:

    Click to vote
  • Author / Product:

    Stellar Information Technology / Stellar Converter for OST

  • Old Versions:

  • Filename:


  • Details:

    Stellar Converter for OST 2023 full offline installer setup for PC 32bit/64bit

Stellar Converter for OST is a powerful email management utility that can help professionals and businesses to extract inaccessible OST files (offline folder files) in Microsoft Outlook and convert them into easily accessible Outlook PST files (Personal Folders file that contains local copies of Mailbox content).

  • Converts orphaned, encrypted, or IMAP OST into PST
  • Supports Outlook 2021, 2019, 2016, and earlier versions
  • Exports OST file data to Office 365, MS Outlook, and live Exchange (Technician Plan)

Built from the ground up to be capable to work with large OST and PST archives, this enterprise-grade application can quickly, easily, and reliably convert encrypted or orphaned OST files. It features full support for all the latest versions of the Outlook app (2021, 2016, 2016, and even earlier versions), and has a built-in converter for exporting all recovered data to Office 365, MS Outlook, and live Exchange.

OST file is a temporary backup that Microsoft Exchange keeps for every connected user and their mailbox. It contains all data associated with that account, which includes local copies of messages, calendar events, and many other items. This archive is accessed and updated when users are working on their account offline, with Exchange service synchronizing newly added data with live content on cloud servers when the internet connection is established. However, if a user's Mailbox is deleted or corrupted before an active backup is made, the only way to regain access to mailbox data is by recovering and converting the OST archive.

Stellar Converter for OST performs this activity reliably and quickly, enabling teams, companies, and organizations of all sizes to export OST into PST, and manage PST with an advanced “8-in-1 solution” Stellar Toolkit utility that provides tools such as merging, splitting, partial deleting, and exporting. Users even have the ability to merge multiple OST files into a single PST.

To accelerate the procedure of recovering data from OST archives, Stellar Convert OST to PST can automatically locate and list Outlook data files, provides previews for all found local files, built-in search engine, auto splitter of large PST archives, and many other extraction, conversion, sorting, and filtering tools. The advanced Technician licensing tier even allows for direct exporting of multiple mailboxes from OST and PST archives into Office 365 accounts, both individually and as a batch processing procedure. The most expensive “Toolkit” license tier can even recover lost Outlook passwords and attempt recovery of deleted emails.

Compare Editions

Corporate Plan

  • Converts OST into PST format
  • Lists all OST files from the default location
  • Converts All Offline Mailbox items with Free Preview
  • Saves & loads scan data
  • Auto-splits large PST files while saving the mail items
  • Advanced filter options for precise conversion
  • Saves the mailbox data in PST, EML, MSG, RTF, HTML, and PDF file formats

Technician Plan

  • Includes all features of Corporate
  • Converts multiple OST files in batch
  • Compacts & Splits PST file
  • Exports to live Exchange
  • Exports to Office 365
  • Exports to MS Outlook
  • Exports contacts in CSV file

Toolkit Plan

  • Includes all features of Technician
  • Repairs corrupted PST file
  • Recovers the mailbox items
  • Merges multiple PST files
  • Removes duplicate emails
  • Recovers lost password of PST
  • Restores the deleted emails

While Stellar Converter for OST can be downloaded for free when it activated only a limited set of preview tools, fully featured versions of this app are accessible only via a premium subscription. Stellar Converter for OST offers three tiers of usage -Corporate, Technician, and Toolkit.

The app can easily run on any modern PC hardware with at least 4GB of RAM and is optimized for all modern versions of Windows OS (Windows 7 and newer). The user interface is also translated into five international languages.

Note: The Demo version of the software converts the Outlook OST file and previews the complete mailbox data. It also allows you to extract and save up to 20 items per folder.

Join our mailing list

Stay up to date with latest software releases, news, software discounts, deals and more.