Freeware OST Viewer Tool

Download DataHelp OST Viewer Tool to open, view and analyze corrupted, orphaned or inaccessible OST files with attachments without Outlook. You can easily access complete email data securely with advanced scan technology.

Excellent TrustScore 4.7 | 541 Reviews

Open And View Corrupted Or Orphan OST Files
Preview Emails With Attachments And Metadata
Advanced Scan Mode To Recover Deleted Items
No Exchange Server Or Outlook Required
Supports All Outlook And Windows Versions
Supports All Windows(11,10,8,7) and Server Versions
Upgrade to Pro Version to Search, Print and Export OST to PDF Files

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100% Secure

Free Live Demo - Trusted by Professionals Worldwide, DataHelp OST Viewer Software Fully Secured Download Version

DataHelp Free OST Viewer Tool

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Download with Confidence: Certified Clean by 70+ Antivirus Engines

What Can be Viewed From the OST Files?

Freeware OST Viewer Software to View OST Files With Attachments

Attachments

Open and see any photo, PDF or spreadsheet that was sent along with the email.

Contacts

View the list of saved contacts including the names, phone numbers and email addresses.

Calendar

Check your future as well as past meetings and important reminders.

Folder Structure

Open and read your original folders like Sent, Draft and Trash to find what you need.

Smartly View OST Files

Freeware OST Viewer Tool to Read OST Files

The DataHelp Free Viewer Tool allows you to read corrupted OST files and keep your emails safe.

Offers Smart Preview Modes for easy browsing of OST files.
An Advance Scan option to help read corrupted and orphaned OST files.
Works offline to open OST files without uploading the files to the web.
The free OST viewer maintains your original folder structure.
Scan large data files without slowing down or freezing.
Provides Hex View and Message Header View for deep data analysis.
View email properties like To, From, Cc and Bcc using the OST email viewer.
Use the OST contacts viewer to view the properties of calendars and contacts.

Tool Capabilities

DataHelp OST Viewer Capabilities

OST File Errors Fixed by DataHelp Free OST Viewer Tool

Outlook OST file is inaccessible
Open OST file without Outlook
Recover orphaned OST file data
OST file is corrupted error
Outlook OST file cannot be opened
Orphaned OST file data recovery
Access OST files without Exchange server

Key Features of DataHelp OST Viewer Tool

Download OST Viewer Software to Open, Read OST Files Without Outlook

View OST File Content

Using Free OST Viewer Software, users can easily read OST Emails, Contacts, Calendars, Tasks, Notes, Journals. The software is capable enough to generate display of properties of messages as from, subject, to, received date, size in bytes etc. In addition to it, software enables the users to view properties of attachments like images, files, documents, etc.

Scan OST File Via Two Scanning Modes

The OST File Viewer software is capable enough to scan the OST files easily. The scanning process in Outlook OST file is done in two ways i.e., using Quick scan and Advance scan. If an OST file is highly corrupted, users should go for Advance scanning option. By default, the Offline OST Viewer tool performs the quick scan in the OST files.

View Contacts and Calendar of OST

The designing algorithm of Outlook Free OST Reader freeware allows users to preview OST contacts, emails, calendars along with distribution list. While launching the wizard, it generates same view of contacts as present in Microsoft Outlook. Additionally, screen shows mails by default but on navigating users also get calendar tab to view and explore the calendars.

Optimize Outlook OST Files Viewing

The Exchange OST Analyzer permits users to get display of OST file items in an optimized way. It does not generate the crash report while optimizing. It provides an option to change location of a temporary folder from the C drive i.e., installation drive for freeing the space. This helps in reducing the space of the memory consumption.

Outlook & Exchange Not Required

The utility is Best OST Viewer, that it can easily read OST file without being present in Outlook and Exchange arena. The tool really works as a stand-alone utility in case of reading and previewing OST files. The best part of the tool is that it works best with Windows 10, 8, 7 (32-bit or 64-bit) & Windows Server 2016, 2012 R2, 2008.

Preview of OST files in different Views

The Free OST Reader tool has so easy user interface and designing algorithm that it can easily support multiple views. Offline OST Viewer allows the user with 6 interfaces like Normal mail view, Hex view, properties view, MIME view, HTML view, RTF view, message headers, and the attachments. Users can easily opt for any one of them.

Why Choose DataHelp OST Viewer?

Free OST Viewer Tool to Scan and Read OST Files

DataHelp OST Viewer

Opens broken OST files
Provides eight preview modes
Works without an Outlook profile
Views data from encrypted files
View all your files offline

Other Online OST Viewer

Opens only healthy data files
Provides only one view
Requires to install Outlook
Cannot read protected data files
Requires risky cloud uploads

DataHelp OST Viewer - Technical Specifications

System Requirements to Use This Freeviewer OST Viewer Software

DataHelp Freeviewer OST Viewer

Version 5.0

File Size 18.1 MB

MD5: 7920bd60326278c1bd912f4146f604d7

License FREE

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100% Safe & Secure Download

What's New in This Version

⚡ Faster Scanning Engine

🔍 Improved Data Preview

🛡️ Enhanced Stability

System Requirements

💻 Operating System: Windows 11, 10, 8.1, 8, 7
🧠 2 GB of RAM (2 GB is Recommended)
💾 100 MB of Free Hard Disk Space Required

⚙️ 1 GHz Processor(2.4 GHz is recommended)
📦 Supports 32-bit & 64-bit OS
🔐 Admin Privileges Required

Prerequisites & Resources

Resources and guide how to use DataHelp OST Viewer Software

User Guide EULA

How to Open OST File - Video Guide

Read OST File Data Using DataHelp Free OST Viewer Tool

Step 1: Download & install DataHelp Free OST Viewer Wizard.
Step 2: Launch the software and click on the Add OST File.
Step 3: Browse and select OST file which you want to view.
Step 4: The software will scan the complete OST file.
Step 5: You can follow the video guide to for complete details.

DataHelp OST Viewer Comparison - Free vs Paid

Download Full Version Of OST Viewer Software

Feature and Capability	Free Edition	Pro Edition	Pro+ Edition
Scan Files
Auto Scan Mode
Open Outlook Files
Preview Emails & Attachments
Install on Different Computers
Advanced Search
Save as PDF
Export to PST, EML or MSG
Split Large Files
Cost	Free	$69	$129
Buy Links	Download Now	Buy Now	Buy Now

How Does the DataHelp OST Viewer Work?

Best Free OST Viewer Tool to View OST Files With Attachments

Add OST File

Open the tool and add the OST file that you want to view.

Scan the File

Click the Process button to scan the data in the file.

Preview OST Data

Open and read the text, images and attachments in the scanned OST file.

Save the File

Option to save and export the file in different formats after upgrading.

Trusted by Professionals Worldwide

DataHelp Software is Trusted Worldwide for Secure and Accurate Email Converter and Recovery Solution

Customer Reviews

Explore Our Client’s Success Stories

Recover Emails After Deleting an Account

When I left my job the company deleted my email account and I was left with an orphaned OST file that I could not open. This OST viewer helped me to read the files without being connected to the server or remembering the password.

Claudia Weber, Germany

Saved My Attachments from a Crashed Outlook

I had some important contacts in my Outlook profile which got corrupted and would not start. The OST viewer tool allowed me to browse the inbox and view all the PDF and attachments.

Isla Green, England

Great for Quick Checks

I need to verify the contents of an offline database for audits without changing the data as an IT consultant. This tool provides a professional layout that shows To, From and Date fields and I was able to sort the archived emails in seconds.

Chloé Laurent, France

Easy to Use

This OST viewer was easy to navigate and it helped me see the full email messages and all my old contacts without any confusion.

Hudson White, Australia

Handles Large Data Files

I had a 20GB large OST file but most of the tools would freeze or crash when I tried them. This OST file reader loaded the whole archive easily without slowing down the computer and I also liked how it kept the original folder structure organized.

Jennifer Smith, USA

Awards & Reviews

Frequently Asked Questions