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SysTools
OST Viewer Freeware

(Average Rating 4.7 Based on 1966 Reviews)

View Corrupt or Orphan OST Files Without Email Client Dependency

View OST File Data Such as Emails, Contacts, Calendars, etc.

  • Complete Preview of Outlook Emails, Contacts, Calendars, Tasks, etc
  • Preview OST Email Along With The Attachments Associated With It
  • Scan and Browse Corrupt or Orphan OST File via Advanced Scan Mode
  • Sort OST Emails by Attributes: From, To, Subject, Sent, Size, etc.
  • Add Multiple OST Files One by One & Preview Item in an In-built Viewer
  • Exchange Server Environment is Not Required to View and Read OST Files
  • OST Email Viewer Provides Advance Scan Mode to Recover Deleted OST File Items
  • Reload The Saved Scan File and View OST File in Just a Few Seconds
  • View Read / Unread Message Status Directly from The Software’s Interface
  • Run OST Viewer Software on More than One Computer & Laptops Free of Cost
  • Supports OST File of The Latest Microsoft Outlook 2019 and All The Prior Versions
  • Support Windows OS All The Versions: Windows 10, 8.1, 8, 7 etc.
  • Upgrade to Pro Version to Avail Advanced Search, Export as PDF Option

30 Days Money Back*

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Awards & Reviews

Software Informer

Software Informer gives SysTools Outlook OST Viewer software 100% secure and clean award for its best performance.

SoftPedia

SysTools Outlook OST Viewer software gets 100% clean award by Softpedia for delivering Ad/Virus/Spyware free solution.

Soft32

Soft32 rated SysTools Outlook OST Viewer Software with a 5-star rating for being the most effective product for reading OST files with attachments.

Software Suggest

SysTools Outlook OST Viewer is the recommended tool among various others as it has the best performance for viewing OST files.

MVP & Expert Reviews

Tech Blogger

SysTools OST Viewer utility is a versatile and smart tool to view Outlook OST files without the installation of any email client. Moreover, the software also provides various functionalities due to which user’s work becomes seamless.

Tech Blogger

SysTools OST Viewer Freeware is a program for browsing the contents of Outlook OST files (Email, Contacts, Calendars, Tasks, Notes, Journals), along with its attachments.

Tech Blogger

With SysTools OST Viewer tool, I was able to view orphan OST file present on my system without any issue. The software is very easy-to-use and works with great speed and efficiency.

Tech Blogger

When it comes to an all-rounder tool to view and examine OST files, then I would always suggest SysTools OST Viewer tool. Moreover, there is no chance of occurring data and security breach issues while working with the tool.

Key Features of Free OST Viewer Tool

Multiple Preview Modes to View OST File

With SysTools OST Viewer Pro, one can read OST file in different preview modes provided by the software. The Forensic Investigators can also perform the in-depth analysis of OST emails via the various preview modes provided by the software. Moreover, the utility is capable to work with OST file of different Outlook versions without any compatibility issue.

Preview Modes Provided By OST Viewer

  • Normal Mail View
  • Hex View
  • Properties View
  • Message Header View
  • MIME View
  • HTML View
  • RTF View
  • Attachments View

Support OST File of Outlook Version

  • Microsoft Outlook 2019
  • Microsoft Outlook 2016
  • Microsoft Outlook 2013
  • Microsoft Outlook 2010
  • Microsoft Outlook 2007
  • Microsoft Outlook 2003
  • Microsoft Outlook 2002
  • Microsoft Outlook 2000

Robust Search and Export Functionalities

Sometimes, the user needs to search for a particular OST email among various OST files. With OST Viewer software developed by SysTools, the user can easily search for a specific OST email using Advanced Search feature and also save the search results into PDF format.

  • Advanced Search: One can easily search for a particular OST email among tons of OST files in a simplified way with the help of the Advanced Search option. Moreover, one can also apply filters and operators to make search more specific.
  • Export to PDF: In some cases, the user needs to export OST files into PDF format. To present evidence in courtrooms, Forensic Investigators need to convert OST files into PDF format. The software permits the users to convert OST files into PDF format.

View Different Data Item Associated With OST Using SysTools OST Viewer

OST Email Viewer

Normal Mail View View OST file emails along with attributes such as:
  • Path
  • From
  • To
  • Cc
  • Bcc
  • Subject
  • Attachments Message Body
  • Date
  • Time
Attachments View
  • View attachments associated with OST files.
  • Preview different types of attachments such as image, text, DOCX, charts, etc.
  • Play audio and video file present in the attachments directly from the software interface.
Email Functionalities Show status of OST emails:
  • Read Status
  • Unread Status
Sort OST emails according to attributes such as:
  • From
  • To
  • Subject
  • Send
  • Received
  • Size (KB)

OST Calendar Viewer

Calendars Details View OST files calendars along with the information and attributes such as:
  • Path
  • Subject
  • Location
  • Start Time
  • End Time
  • Recurrence
  • Attachments with Contacts
Sort calendars associated with OST file according to:
  • Subject
  • Location
  • Start
  • End
  • Categories

OST Contacts Viewer

Personal Details The software permits the user to read OST files contacts along with the personal details such as:
  • Name
  • Nick Name
  • Birth Date
  • Spouse
  • Anniversary
Contact Details One can view different contact details of OST contacts:
  • Primary Phone
  • Mobile Phone
  • Pager
  • Home
  • Business
Address Details The software allows the user to view address details such as:
  • Home Address
  • Business Address
  • Other
Email Address One can easily view the email address associated OST contacts.
Sort Contacts The tool permits the user to sort emails according to:
  • Full Name
  • Company
  • File As
  • Business Phone
  • Business Fax
  • Home Phone
  • Mobile Phone
  • Categories

OST Tasks Viewer

Tasks Details One can also view the attributes associated with the OST files tasks such as:
  • Subject
  • Start Date
  • Status
  • Due Date
  • Priority
  • Complete
  • Reminder
  • Owner
  • Recurrence
  • Attachments related to OST tasks
Sort Tasks The user can easily sort tasks according to:
  • Task Subject
  • Status
  • Due Date
  • Categories

OST Notes Viewer

Notes Details The user can view OST files notes along with the details such as:
  • Subject
  • Created
  • Categories

OST Journal Viewer

Journals Details The tool allows the user to view information related to OST Journals:
  • Subject
  • Category
  • Entry Type
  • Start
  • Attachments
  • Company
  • Duration
Sort Journals One can easily sort Journals associated with OST files according to:
  • Subject
  • Start
  • Duration(min)

Prime Features of SysTools OST Viewer

Free OST Viewer Tool to Read Corrupted OST Files

Preview Multiple OST Files

With free OST Viewer, the user can read OST files; emails, contacts, calendars, etc. The OST Email Viewer software will generate a preview of all messages with attributes like From, Subject, To, Sent, Received date and Size in bytes. One can also view details associated with OST email message such as path, subject, cc, to, bcc, etc.

View Email Attachments

One can easily view attachments associated with OST emails directly from the OST Viewer software’s dashboard. The user can view different types of attachments such as image, documents, file, etc. via the tool. Moreover, the software permits the user to play any audio or video embedded into the attachment from the software interface.

Advanced Scan and Save Scan Mode

The user can easily view orphan as well as corrupt files via Outlook OST Folder Viewer tool. If the user is having a corrupt OST file then he/she has to select the Advanced Scan to scan OST file and eliminate the corruption. After the scanning process, Save Scan Mode permits the user to save the healthy OST file in the software interface. The user can load the saved OST file just by clicking on the Load Scan option.

No Pre-Requirements

One can easily read and view OST files using the OST Email Viewer software without the dependency of any email client. Moreover, there is no requirement of Exchange Server environment to view the OST files. Free OST Reader is a standalone utility which makes it seamless for the user to view and read OST files along with all the data items.

OST Contacts Viewer

The Outlook OST Viewer software provides the preview of all the contacts associated with the OST file along with different attributes. The user can easily view personal details, contact details, address details, emails address associated with contacts, etc. Moreover, the user can also sort OST contacts according to various attributes such as From, Company, File As, Business Phone, Home Phone, Mobile Phone, Categories, etc.

OST Calendar Viewer

The free OST Calendar Viewer tool also permits the user to view calendars related to OST files directly from the software’s dashboard. The user can view calendar details such as path, location, start time, end time, recurrence, etc. Additionally, one can also sort OST calendar according to Subject, Location, Start, End, and Categories.

Sort OST File Data By Attributes

The Outlook OST Folder Viewer software allows the user to sort OST emails, contacts, calendar, notes, etc. according to particular attributes. These attributes vary according to OST file data items. These attributes include: From, Company, Location, Subject, Category, Size, Home Phone, File As, To, Sent, Received, etc.

Optimized OST Viewing

The OST Reader tool allows the user to Read OST file items in an optimized way without showing any crash report. As it provides an option to change the location of Temp folder (of software) from installation drive (C drive) to any free drive space, which in turn reduce the main memory consumption.

Upgrade to SysTools OST Viewer Pro to Avail Advanced Features

Preview Email In Different Styles

With OST Viewer Pro, the user can preview OST emails in different file formats such as Normal Mail View, Hex View, Property View, Message Header View, MIME View Attachments View, RTF View, etc.

Sort Email via Property

Once the emails in OST file get listed, one can sort it by arranging its properties like From, To, Received date, Sent Date, and Size in KB in upside down or vice versa order.

Advanced Search OST File

OST Viewer Pro grants the advanced searching feature to find specific email by typing a matching keyword or term. The user can apply various filters such as To, Bcc, CC, etc. and filter operators: AND/OR to perform deep searching of messages of an OST file.

Export OST Files to PDF

The user can also export OST files into PDF file format via OST Viewer Pro utility. One can also export OST emails into PDF in a batch along with the attachment. Moreover, the user can also perform the selective export process by selecting desired OST files.

Date Filter Option

While exporting the OST files, the user can also apply date filter to export the OST emails according to a particular date range. The user just has to select the desired date range in ‘To’ and ‘From’ fields.

Save Selective Files or Folder

The user can easily check or uncheck the OST files or folder which he/she want to export into PDF format. This will save the user’s time by exporting only the required OST files or folder.

Set Naming Pattern For PDF

One can easily use various combinations of date, year, month as well as auto incremental options to save the resultant PDF file. By default, the files will get saved as the subject. The user can also alter the name according to the choice.

Make New Folder to Save File

OST Viewer prompts the user to choose the desired location for saving the converted OST file. If the user wants, he/she can also create a new folder from the software panel to save the PDF files directly into it.

OST Viewer Software Specifications

Free Download OST Reader Software

Software Download

Size 18.1 MB

Version 5.0

MD5 7920bd60326278c1bd912f4146f604d7

Demo Limitations

Limitations

Free version of SysTools OST Viewer Tool only preview all Outlook OST Emails, Contacts, Calendar, Notes, Task, Journal Items.

System Specifications

Hard Disk Space

100 MB of free hard disk space required

RAM

2 GB is recommended

Processor

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

Operating System

Additional Requirements

Microsoft .NET framework 4.5 and above

Application Pre-Requisites

If you are using Windows 10, 8, 7 (32 bit or 64 bit) & Windows Server 2016, 2012 R2, 2008, then please launch the tool as "Run as Administrator".

Product Guides

FAQs

Question: Is your Anti-virus blocking the software export process ?
Solution: Please Disable Anti-virus Temporarily / Allow access (Whitelist) from Anti-virus settings for proper working of the software.

Question: Unable to Create Output in Destination ?
Solution: Please avoid source from NAS, SAN, Network or Shared Drive. Source file should be on migration machine to perform successful migration.

Electronic Delivery

The delivery of product is automated. You will receive an email containing both the link to download the product and the activation key within few minute after payment confirmation.

Upgrade to OST Viewer Pro Version

Upgrade to Outlook OST Viewer Pro for Advance Search and Export Option

Features FREE Version PRO Version
Add OST File
Auto Scan Mode
Preview OST Files
View Emails with Attachments
Free Installation on Multiple Computers
Windows 10 & All Other Previous Windows Version Supported
Advance Search Options
Naming Option
Save & Export to PDF Document
Cost FREE
Frequently Asked Questions

Listed Commonly Asked Questions and Answers

How Can I View OST File without Exchange Server connectivity?

The Working of Free SysTools OST Viewer Tool

  • Step 1: Download Outlook OST Viewer Freeware Tool
  • Step 2: Browse OST File with Advance Scan Option
  • Step 3: Preview OST File With Attachments
  • Step 4: Switch View Mode: Horizontal or Vertical.
Can I use the Software on Windows 10 Machine and read OST file easily?

Yes, the OST Viewer tool is compatible with Windows 10 machine and all its previous versions. Of-course you can Read OST file easily by the help of Ost file Opener.

Is there any limitation on the size of OST file that the software can process?

No, there is no limitation on size of OST file or number of emails that the OST file explorer software can process.

Is the software free to use or do I have to pay for it later?

OST Viewer is an application absolutely free of cost with limited options. For advance options like: Export to PDF or Advance Search; you need to upgrade to OST Viewer Pro.

Can I Browse an Orphan OST File with Free OST Viewer?

Yes, you can view an orphan OST file using OST Viewer. No application or Server environment is required to read and view OST files by OST file browser.

Can I View and Read a Corrupt OST File with OST Viewer?

Yes, the OST explorer software will allow you to view OST file contents which is corrupted no matter what type of corruption it is, you can view OST file easily. OST file opener tool has two modes of scanning: : Quick and Advance. Quick mode is used by default & if there is minor corruption and still if you are not getting whole data items of OST file then use Advance option for scanning. This mode scans every sector of the file deeply and is used for high corruption.

Will software work even without Outlook and Exchange Server Environment?

Yes, Free OST file Reader will View OST file in Outlook and even without Outlook, and Exchange Server environment. OST browser software is completely independent of Outlook or Exchange Server to View OST file.

Can I Save Previewed data into any file format?

No, it is not possible to save the previewed data using the free viewer. But you can save all data into any desired file format using OST Converter.

Can I view OST file without any data loss and security problem?

Yes, the user can read and view OST file via the OST Reader software without facing data loss or security issues.

Does the OST Viewer software provide a preview of attachment associated with OST file?

Yes, one can easily view the attachments associated with OST file via using the OST Reader Attachments View Mode.

What Customers Are Saying

SysTools OST Viewer Software Verified Reviews

I am a Forensic Investigator and I need to examine OST files to carve out evidence from them. Thus, I wanted an instant and reliable way to investigate OST files and then save it into PDF format. One day I got to know about SysTools OST Viewer, it is such a performance-rich and efficient tool to work with. Now, with OST Reader, I can perform in-depth analysis of OST files in a hassle-free way

Paul Drew

New York

My Manager shared an OST file with me. The problem was that I was not able to read and view that OST file. Then one of my friends suggested me SysTools OST Viewer and this software was the lifesaver. Within just a few clicks, I was able to view orphan OST file without installation of any email application.

Justin Paolo

London

SysTools OST Viewer is having various functionalities and features which makes easy for the users to work with corrupt and orphan OST files. Moreover, the Free OST Reader software is having a user-friendly interface which permits the user to work with the tool without any problem.

Sabina Jones

Greece

With SysTools OST Viewer, I was able to work with orphan OST files. I need to view OST file emails and contacts with all the details associated with it. The OST Viewer made it possible for me to read and view OST files with all the data such as emails, contacts, calendars, etc. Moreover, with the software, I was also able to view the attachments associated with OST files.

Mike Ryan

New Jersey

4.7

1966 Ratings
5 Star
79%
4 Star
19%
3 Star
1%
2 Star
0%
1 Star
1%