Extract OST to PST tool




EmailDoctor OST to PST Extractor

OST to PST Extractor is a mastered application that can easily extract data from OST to PST / Exchange Online software / EML / HTML / MSG / PDF File. This tool can easily export OST file mailbox items such as email, contacts, calendar data without any data loss.

(Average Rating 4.3 Based on 684 Reviews)
  • Convert OST file to Outlook PST with all Emails, Contacts, Calendars, etc.
  • View Outloook OST files messages and Contacts, Notes, Journals, Tasks, etc.
  • Safely Remove Encryption (S/MIME and OpenPGP) from OST Emails & Extract OST to PST
  • Apply Filter on email messages according to desired date range
  • Supports to Convert Exchange Server OST, IMAP, Hotmail OST files, etc.
  • Restore MS Outlook OST into Common File PST, MSG, HTML, EML etc.
  • Metadata of emails remains maintained while converting OST to PST
  • Successfully tested with the extraction of 20 GB of OST to PST file
  • Extract Unlimited OST file size supported for conversion to desired file
  • Quick support to export OST File to Office 365 Email Profile
  • OST to PST Extractor is compatible with all version of Microsoft Windows OS

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Introduction to OST file

Need to Convert OST To PST Format

OST file is known as Offline Outlook Data File, which is created by Microsoft Outlook Exchange Server and it provides facility of mailing and messaging despite server unavailability. Users can create a mailbox cache replica, which is OST file. This file enables cache Exchange mode and offline mode even when users are not connected with mail server. Enabled cached Exchange mode creates OST file automatically at user's computer if OST file is not created.

Change of email, deletion of email, new email creation, new calendar creation and new task creation in Outlook is reflected on the Exchange Server mailbox after synchronization when connection is available. Cached Exchange mode creates OST file and then file is downloaded and maintained as synchronized copy of items in all items of mailbox. User keeps working offline whether the connection is available or not and when connection will be available then synchronization takes place and all changes done by user will reflect on Server end.

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  • OST file is not accessible directly by email client like: Microsoft Outlook.
  • Emails cannot be viewed by OST file using Microsoft Outlook or any other email client.
  • To overcome this problem you need an extractor, which can convert OST file to Outlook PST, EML and MSG and HTML file format by which you can easily access emails, calendars, etc.
  • MS Outlook OST to PST Converter also enables you to restore all deleted emails as well as recover the corrupted ones.

Why OST to PST Extractor Should Be Preferred?

OST to PST Exporter tool is programmed to help overcome problems related to accessing the contents of offline OST file. Outlook Offline OST Converter comes with multiple features to handle these problems related to OST file. With advanced mode as well as simple scanning mode by which you cannot only extract files from OST but also you can restore emails from OST files.

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EmailDoctor OST to PST Extractor Software Features

easily extract OST file emails

Extract OST emails to PST (Outlook) File

Convert all data (emails, contacts, calendars, tasks etc.) from Exchange OST to Outlook PST file to access the output using MS Outlook. Microsoft Outlook OST files of unlimited size are supported for conversion. It also allow you to save extracted file into EML and MSG file format.

Dual Scanning Mode

Scan OST File & Export to PST

There are two scanning modes to convert offline Outlook OST file to PST; Quick Scan and Advanced Scan. Quick scanning mode is automatically implemented if Advance Scan is not selected. Advanced scanning mode serves recovery from severely corrupted files and restores deleted files. Simply extract OST files to PST format.

Preserve OST file metadata

Metadata of OST File Items Maintained

OST to PST Extractor tool keeps all meta-properties of the processed emails unchanged like Sender email address, receiver email address, time, formatting, attachments, etc. You don't need to worry while executing convert exchange OST file to PST procedure.

Preview OST file data items

Preview Data & Item Count

After successful conversion, Exchange OST to PST Conversion tool generates a preview of all items (Emails, Calendars, and Contacts etc.) and displays all items same as in the source file with attachments. You can view your data which are present inside file before OST email extraction process.

export selective OST file data

Selected Emails Export to Outlook PST Account

Selected items (Emails, calendars, notes, tasks etc.) can also be performed instead of saving the entire user mailbox. Convert OST to PST Tool lets you save selected messages in limited time duration with the mere need to check the desired items in the extraction process.

migrate selected OST file emails

Export Selective OST Files / Folders to PST

Other than emails, personal items like notes, journals, and contacts can also be converted selectively from OST file. Select Tasks, Notes or Calendars etc., and extract OST to PST by proceeding with the export procedure to a desired output format.


Folder Hierarchy Maintained During Extraction

Extract OST to PST tool can maintain the same hierarchal structure in converted PST file as it was in the source OST file. There are no changes made in the structure after the extraction in concern of data and the folder structure.

apply date based filters

Email Filtration by Date & Months

The Convert OST files to PST utility allows you to convert items from OST by specifying range of dates for filtration of Email. You can specify a start date and end date, i.e. 'From' and 'To' dates, which will be recognized by the software to select emails.

Migrate OST file to multiple formats

Convert OST Emails to Multiple Formats

After a successful data recovery & extraction, you can save emails into multiple file formats (.eml, .msg, .html and PST) and with this; you can get wider usability of emails via accessibility on various other email clients other than Microsoft Outlook.

split pst file option

Split PST (Converted File) by Size

At the time of exporting as PST format file, you can select the option to split the output into small parts by specifying size GB. The OST to PST extractor software will then export the selected data from source OST and evenly distribute it in multiple PST files of the desired size.

repair and save OST file data

Repair and Save Scanned OST File Data

The OST to PST Extractor provides you the facility to save scanned file by which you can load later whenever needed and you need not to scan again the same file and like this you can save scanning time repeatedly.

Migrate data without Outlook

Convert Data in Absence of Outlook

MS Outlook OST Extractor provides you facility to save or export Outlook OST emails into another file format and for this; you do not need to have Microsoft Outlook installed on your machine.

Export Report

Save OST to PST Conversion Report

MS Outlook OST to PST Converter gives you facility to export the report of extraction in which you get information about mailboxes and path of saved items. This report can be saved in .csv file format for future use.

Change file name

Change File Name Accordingly

It allows you to change file name at the time of exporting the converted file. The change in file name is only applicable for EML and MSG file format. You are provided custom naming conventions to name the messages while converting OST to PST format.

OST TO PST Exporter Specifications
Download OST to PST Migration Tool to Export Microsoft Outlook OST File

Download Software

Size 35.4 MB

Version 8.0

Trial Limitations

Free demo version of OST to PST Extractor application will generate preview of OST file mailbox data and allows the user to export 25 items per folder from Microsoft Outlook PST file to EML / MSG / Office 365 / HTML / PDF formats. .

System Specifications

Hard Disk Space
100 MB of free space required on hard disk

Min 2 GB RAM is necessity

Intel® Pentium 1 GHz processor (x86, x64) or any equivalent

Operating System

  • Microsoft Windows – 2000, 2003, 2008, XP, Vista, or Windows 7/8/8.1/10, 2008/2012 (32-bit & 64-bit)
  • MS Outlook – Outlook 2000, 2003, 2007, 2010(32/64 bit), 2013 (32/64 bit), 2016 (32/64 bit), 2019

Additional Requirements

Microsoft .NET framework 4.5

Application Pre-Requisites

If you are using Windows 10 / 8.1 / 8 / 7 or Vista, then please launch the tool as "Run as Administrator".


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Buy Emaildoctor OST2PST Converter

Get an Overview of OST to PST Extractor Application - DEMO & Licensed Version

Features DEMO Version FULL Version
Option to add Single or Multiple Outlook OST File
Dual Scanning Mode (Quick and Advanced Scanning) option
Preview MS Outlook OST emails and its attachements
Option to split large PST files
Compatible with Windows 10,8, 7 and below versions
Backup MS Outlook OST file to PST 25 items / Folder All Items
Migrate OST file to Office 365 25 Items/Folder All Items
Save and Export Outlook OST 2 PST / EML / MSG / HTML /PDF 25 Items/Folder All Items
Cost FREE $49

Frequently Asked Questions

Listed Commonly Asked Questions and Answers

OST to PST Converter Image

You can easily export OST file to PST format using this tool :

  • Step 1: Install OST to PST Extractor Software.
  • Step 2: Browse OST file from Which you want to extract files.
  • Step 3: Preview OST file data in converter software panel.
  • Step 4: After complete OST to PST Extract process Save
Yes, this tool can convert any size of OST file to PST. This converter doesn't have any restriction of size for conversion.
No, this OST file conversion utility doesnt require Microsoft Exchange server or any other additional software to export OST to PST file.
Yes, This utility allows the user to add multiple OST files and can easily convert more than one OST files at once.
Yes, by using this software the user can easily migrate the selected OST file emails.
After conversion you will get Unicode PST file, which can be opened in MS Outlook 2003 and all above versions of Outlook.

What Customers Are Saying

Client Reviews on OST to PST Extractor Software

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