Open OST in Outlook

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Outlook, in conjunction with Exchange Server or IMAP, generates an OST file. It is highly encrypted and inaccessible from the outside. Microsoft expressly states that you cannot relink an OST file in Outlook. However, after converting OST to PST format, you can easily open it in Outlook even if you do not have an Exchange/IMAP profile.

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Demo Version: Download OST to PST Converter Free Demo Version

OST Converter Features

  • Convert OST to PST and MSG, EML, MBOX, EMLX, NSF
  • Export in PDF, ICS, vCard, HTML, TXT, DOCX, RTF, MHT
  • Convert OST with Emails, Attachments, Contacts, Calendars
  • Exchange Server and IMAP Profile Not Required for Conversion
  • Convert Orphaned OST File to PST Format without Limitation
  • Stand Alone Utility with No Size Limitation for OST Conversion
  • Open OST in Outlook 2019, 2016, 2013, 2010, 2007, Etc.
ost file converter

Convert Any User’s OST File

You can convert OST to PST format regardless of whether you use same Outlook profile or not. It facilitates the opening of another user's OST file in Outlook. The OST converter tool will keep the mailbox structure and all attributes.

Steps to Convert OST to PST

  • Download OST to PST Converter and Install
  • Browse OST File of Any User of Any Size
  • Preview Complete Data in 7+ Preview Modes
  • Select PST Radio Button and Convert OST File
ost to pst

Import Orphaned OST in Outlook

Microsoft does not provide any way to access orphaned OST files. However, after converting orphaned OST files to PST format. Even orphaned OST files can be opened with ease. Simply use the OST to PST converter and make OST file accessible.

Advanced Setting Options

  • Split PST File by Size
  • Date Range Filter
  • Category Selection
preview ost file emails

Preview OST File Data in Software Panel

The software supports any size OST file and has 7+ preview modes. Examine the data in an OST file in Normal Mail View, Hex, Properties, Message Header, MIME, HTML, RTF, and Attachments. After that, open Outlook and import the OST file.

Steps to Open OST in Outlook

  • Launch Software and Convert OST to PST Format
  • Launch Outlook and Click on File Tab from Menu
  • Select Open & Export and then Import/Export
  • Select Import from Another Program
  • Browse PST File and Task Completed

OST to Outlook Converter - Features

Convert Any Size OST File

The converter for OST to PST is capable enough to export large size OST files without any limitations. Simply add the file and select Export options.

Export Offline Mailbox Items

The software is able to export emails, contacts, calendars, task, journals, attachments, meetings, etc. Download OST to Outlook converter and complete import.

View OST File Items

Outlook OST file contains multiple attributes. The OST converter tool will provide your multiple preview modes to check attributes before starting conversion.

Convert Corrupted OST Files

If the Outlook OST file got corrupted and you are unable to open it. Then use this converter tool to convert OST to PST format and open even corrupted OST file in Outlook.

Convert OST File in 6 Mail Format

All in one solution to deal with OST file. Buy OST to PST converter just once and convert your OST files into PST, EML, MSG, MBOX, EMLX, and NSF format.

Export OST File in 10 Document Format

Apart from email file format, the software is capable enough to export OST in multiple document format PDF, ICS, vCard, HTML, TXT, DOCX, DOC, RTF, MHT.

Manage OST File Structure

The OST file's folder structure and metadata will remain unchanged. The data arrangement in Outlook will be the same as it was in the source file after importing OST.

Save Scanned Report

After you add an OST file, the software will scan it and save it for future use. It will save your time by allowing you to open OST files in Outlook 2019, 2016, 2013, and 2010.

Wide Range of Compatibility

You can download OST to PST converter and install on Windows 11, 10, 8, 7. Apart from this, you can import OST file into Outlook 2019 and all below versions.

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Download OST to PST converter and install on Your System.

open ost in outlook

Browse OST file, preview complete data and convert to PST.

task completed

Launch Outlook and import the PST file in it easily.

Open OST to Outlook - Steps
first step
Browse ost File
Preview ost file data
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Free Download OST to PST Converter Software

Software Download

Size : 36.3 MB

Version : 8.0

Trial Limitations

Free OST to PST converter has limitation to export only 25 items/folder. Buy OST to PST converter full version and import complete data from OST to Outook.

System Specifications

Hard Disk Space
100 MB of free hard disk space

Minimum 4 GB RAM

Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz Processor


  • Microsoft .NET framework 4.5 or above should be installed.
  • If you are using Windows 11, 10, 8, 7, then launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows – Windows OS 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019, 2016, 2012 R2, 2008
  • Microsoft Outlook – Outlook 2019, 2016, 2013, 2010, 2007, 2003, 2000

Electronic Delivery

The product delivery is automated. You will receive an email with the link to download the product and the activation key within a few minutes after the payment has been confirmed.

OST to PST Converter - Comparision


Free Version

Full Version

Add OST File in Software

Add Corrupt and Insaccessible OST File

Preview OST File Attributes

Windows 11 and Below Versions Compatibility

Convert OST to PST

25 Items/Folder

Open Corrupt OST in Outlook

25 Items/Folder

Frequently Asked Questions

Yes, But there is no direct solution to relink OST file in Outlook. First of all you need to convert OST to PST format and then open in Outlook.

No, the tool will assist you in converting your OST file to PST. After that, you must use Outlook's Import feature.

The Free demo version only allows you to export 25 items per folder. The OST to PST converter full version, on the other hand, will convert any size OST file.

No, the OST to PST converter software is a stand alone utility. You can convert OST to PST without Outlook, Exchange Profile, IMAP Profile, and Server connectivity.

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