SysTools OST to PST Converter Tool

OST to PST software deals with corruption in Exchange OST files by fixing it through efficient repair programs and then allow users to convert it into Outlook PST format. The recovered data conversion can be selective via Preview facility along with various destination options like Office 365 and other File Formats.

  • Recovers data from corrupt, inaccessible, or orphaned Exchange OST files
  • Converts encrypted OST file to Outlook PST file
  • Converts IMAP OST file to Outlook PST file format
  • Recovers permanently deleted data from mailboxes present in OST
  • Converts all mailboxes folder items – emails, calendar, contacts, journals, notes, tasks, attachments, etc
  • Removes S/MIME as well as OpenPGP encryption from the emails in OST file
  • No restriction on large size of OST files for recovery or conversion
  • Direct export of OST file items to Office 365 and Live Exchange mailboxes
  • Splitting into multiple small PST and Compact & Save options for large PST
  • Provides selective file conversion with Preview generation option
  • Converts OST not only to PST, but also to RTF, EML, MSG, HTML, PDF formats

SysTools OST to PST Converter: Key Features

Repair Corrupt Exchange OST Files
Repair Corrupt Exchange OST Files

Corrupt or orphaned Exchange OST files due to any reason can be repaired with SysTools OST to PST Converter. It deals with even encrypted and UNICODE formats OST files to retrieve its data and further move it for PST conversion readily.

Perform Batch File Conversion
Perform Batch File Conversion

It is possible to move a batch of OST files for the repair and conversion process simultaneously. The files of any size, without any restriction can be added for the effective conversion. Multiple file conversion is as secured as the single file conversion.

Convert OST to PST & More Formats
Convert OST to PST & More Formats

As, the tool name suggests that it converts OST to PST format but it does more. It provides privilege to users to decide among more email services formats for individual emails conversion. The formats as conversion options for the users are namely RTF, PDF, EML, HTML and MSG.

Convert Deleted/Lost Email Items
Convert Deleted/Lost Email Items

The strong algorithms coded in the software programming have the capability to retrieve deleted or missing items from the Exchange OST file. After retrieving of the complete OST items, users can make choice to move any items to PST and other saving destinations.

Automatically Find OST File Location
Automatically Find OST File Location

With Find option programmed on SysTools OST to PST Converter, users can perform automatic search for the OST file location within the system drive. It is helpful when users forgot the OST file location on the system and he needs urgent conversion.

Save and Load OST File Scan
Save and Load OST File Scan

To save users precious time in carrying out the scan for the same OST file, the conversion software integrates Save scan option which saves the scan of OST file data into a file on system location. This file can be loaded anytime in system with Load scan option to get the OST data directly for conversion.

Intact Mailbox Structure After Conversion
Intact Mailbox Structure After Conversion

The OST to PST conversion process does not affect the original OST mailbox structure. In fact, it reconstructs the same hierarchy and email structure, properties during the conversion process so that users get the intact data even at the destination.

Move OST to Office 365 and Live Exchange
Move OST to Office 365 and Live Exchange

OST to PST conversion software helps to move repaired OST data directly to the most in-demand destinations – Office 365 and Live Exchange. Users must have administrative details and Exchange configuration to perform the export of OST data.

Manage Large OST with Split & Compact Options
Manage Large OST with Split & Compact Options

For large-sized OST files, while converting to PST files, it offers two options for its management. The first option is to split the large PST files into multiple small PST files divided by sizes. Another option Compact & Save allows compacting the converted PST file size and saving it to destination.

Offers OST preview with properties
Offers OST preview with properties

After a quick scanning of OST file and recovery of complete mailbox, there is a preview section inbuilt in the tool that shows the live preview of selected mailbox object. You can select email, contacts, calendar, notes, and other components and each component will show its details along with full metadata and properties. The preview modes are divided into various categories – normal mail view, Properties, Message header, MIME, Hex, HTML, Attachments, and RTF.

Works independently of Exchange Server
Works independently of Exchange Server

Although, the software recovers OST file created from an Exchange Account. But, it recovers OST file(s) without requiring the presence of an Exchange Server. It will scan the data file, show you its preview, and apply the filters. The only limitation is that it will require a Live Exchange to export OST file data to Exchange.

Wide Range of Compatibility
Wide Range of Compatibility

SysTools OST to PST Converter shows great compatibility with OST files generated from all Exchange versions including the latest 2019 and 2016. The converted PST can be accessible in all Outlook versions and last but not the least, the software can be run on all Windows Operating System versions.

Tips & Tricks for SysTools OST to PST Converter

  • OST Data With Metadata
  • Convert Inaccessible, Orphaned or Large OST
  • Remove S/MIME & OpenPGP Encryption
  • Numerous Advanced Filters for conversion
  • Supports multiple format for conversion

Software Walkthroug

Software Specifications

SysTools OST to PST specifications, users can follow before use of this software for ease of working:

About Product
Personal, Corporate, Technician, & Enterprise
System Requirement
Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz
4 GB minimum(recommended)
Hard Disk:
100 MB for installation files
Operating System:
Windows 11, 10, 8.1, 8, 7
Whats new:

OST to PST Converter tool offers recovery of corrupt OST file as well as the conversion options to save data in different formats.

  • Quick & Advanced Scanning Modes
  • Remove S/MIME & OpenPGP Encryption
  • Selective Items / Folder Export Options

Frequently Asked Questions

Is it required to have OST file connected with Exchange Server to perform the conversion?

Not necessary. You should just have OST file on your system location and can perform the conversion without connecting to Exchange Server.

What if the OST conversion is not successful and I lose my data in-between?

No need to worry. You can take a trial of this software with its demo version which is the free version of the tool. It includes all the important features of the software and can convert 25 items per folder free. You can take a decision after the trial to purchase the tool or not.

Any risk with very large-sized OST file for conversion?

The software put no restrictions on the size of OST file for conversion. In fact, it helps users to manage the converted PST file size by Split and Compact options which as the name suggest splits the large PST into multiple and compact the big PST file.

How can I verify of the OST data ready for conversion is accurate?

For this query, you can utilize the Preview feature in the software which offers to view the selected scanned OST file item’s content in a clear display.

Can I move the linked large attachments in OST emails as well to the PST format?

Yes, of course. It converts all the mailbox items like emails, contacts, calendars, attachments, notes, tasks, journals, etc. to PST and other selected destinations.

Does the software get hang or take much time for big sized OST files?

The time for conversion directly depends on the file size. But, it is in continuous process of scanning as well as conversion and the status of progress is always live to the users letting users analyze the time duration.

Where can I get assistance to run the software if I stuck in the middle of it?

The software website includes the complete information of its working. Even then, if any query or issue is generated while using SysTools OST to PST Converter, the support team is 24*7 online for help.

SysTools OST to PST: Compare Editions

Outlook PST Repair
Instant Delivery By Email
Personal License $99  $49  Offer till This Week - Save $50 Buy Now Corporate License $299 $199 Offer till This Week - Save $100 Buy Now Outlook Toolkit $249  $199  Offer till This Week - Save $50 Buy Now
Common features
Intallation and Usage Single PC Three PC Unlimited PC
License Validity LifeTime LifeTime 1 Year
Free Technical Support Limited Unlimited Unlimited
Key features
Supports Offline OST to PST Migration yes yes yes
Splits Converted File into small PST yes yes
Compact Converted OST File & Save as PST yes yes
Saves Converted File to Live Exchange & Cloud based Office 365 yes yes
Export Outlook email to Office 365 yes yes yes
Outlook PST Repair
Repairs corrupt Outlook data file yes
Merge PST
Merge PST Files yes
PST Splitter
Splits Outlook PST Files yes
Compact PST
Compacts Outlook PST Files yes
Outlook Password Recovery
Recovers Outlook data file password yes
Outlook Duplicate Remover
Reomove Duplicate email items yes
  $49Buy Now $199Buy Now $199Buy Now

What Clients are Saying


Unbeatable performance with immense satisfaction is what the tool can be defined. It was dumbfound to recuperate the damaged OST files without any change in the data. SysTools OST to PST tool really saved entire client communication. Really, great tool with exceptional features.

rating5Laura Merff Project Head

It was least expected to find a tool that can directly save the OST file content to MSG and HTML formats. Though conversion to other formats worth a lot, but It facilitates such conversion option without any additional charges. A simple tool with exceptional working and saving capacity.

rating5Adonis Beil Managing Director

I tried numerous conversion tools to get the OST files converted to PST for ease of accessibility and due to other technical issues. Purchasing every tool each time was costly. Finally, I tried the evaluation version of SysTools OST to PST tool and found satisfactory results. It not only converted the OST files to PST files, but also provided different saving options.

rating5Griffin Moore QA Lead
SysTools OST to PST Converter

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