eSoftTools

Free OST Viewer Software

Most advanced solution for directly viewing Outlook items from OST files. Access OST file's inner emails, contacts, calendars and other items. Read Outlook items from all types of OST files without need of MS Outlook or MS environment.

Free OST Viewer Software - Advanced Features


(Note:- Upgrade to Pro/ Pro Plus Edition & convert/ export OST to 15+ conversion & cloud options.)


Software Working Screenshots


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Free OST Viewer Software - All Features


Directly Open OST file & Read Outlook items

The quickest and most reliable method of directly opening Outlook OST files. Open OST files of various types and sizes using a simple procedure and without an Outlook or Exchange environment. From damaged, encrypted, orphaned, or inaccessible Outlook OST files simple read outlook items.

With OST viewer, now it is simple to load one or more OST files at once and to obtain a preview of all its inner contents. Display all of the emails, contacts, calendar events, and other data from OST file with complete security.

Read More >> How to Open/ View Outlook OST Files?

Show all Outlook items from OST files

Users of this Outlook OST file viewer tool may easily open an OST file and obtain a preview of all its inner items without need of MS Outlook application. You may view every content of OST file using the software (including- Outlook emails, contacts, calendar, journals, notes, and other items.)

Email preview with complete info

Users may access OST emails with all of their associated metadata and properties using OST file viewer tool. The software provide Email preview from OST files with message content (including photos, hyperlinks, etc.), and header information (like- to, bcc, cc, from, subject, and so on).

Supports all type of Outlook OST files

The software supports all types of OST files in order to provide previews of Outlook items. Users may easily view all data items from damaged, inaccessible, encrypted, or orphaned OST files and retrieve their data without any difficulty.

Adding Single or Multiple OST files

Users of the software have two choices for adding OST files, either individually or in bulk: -

Search OST from unknown locations

Using the search OST feature of OST reader tool, begin adding OST files from unidentified places. To effortlessly import all Outlook OST files from unidentified location, use this search feature. Choose folders from your local drive, and swiftly scan the directories for adding OST files.

View each OST item individually

Users of the software may rapidly preview every item from OST files on a second preview screen. Additionally, users get the option to view each OST file item in a separate window. By double-clicking on each OST file item users will gets its preview on separate window with complete data.

Open any sized OST file without restrictions

OST Reader has no size limitations and can work with OST files of all sizes. Users may open Outlook OST files of any size with ease and examine all its inners contents. Additionally, this tool successfully opens several OST files of various sizes at one time.

Supports all MS Outlook Editions

Users may access OST files of all MS Outlook Editions using OST File Reader. OST files of all MS Exchange and MS Outlook editions are accessible by this software, including- 2021, 2019, 2016, 2013, 2010, 2007, 2003, and earlier versions.

Smart Graphical User Interface

Every kind of user may easily utilise the OST Viewer application because of its simple and smart graphical user interface. The software is secure to use, and both expert to non-technical to quickly read OST files data.

All Windows O/S Edition Support

Users can run this software to read all OST file's data on any version of Windows operating system. On newer to older versions of Windows, such as- Win 11, 10, 8.1, 8, XP, and Vista (both 32bit and 64bit), users may simply access this free OST viewer software.


Frequently Asked Questions (FAQ)


How to Open/ View OST file content with Free OST Viewer Software?

  • On your computer, download and install eSoftTools free OST Viewer software.
  • Open the programme, then select "Select OST" button from the menu bar
  • Choose either "Single File" or "Bulk File" as the file selection mode.
  • Select and add the Orphaned OST files, then click the Start Scanning button.
  • Scan OST file and load all its inner folder and items into the software.
  • In the right side panel, click on each folder or subfolders to extract Outlook items.
  • Now easily, obtain a preview of each OST file item by clicking on it.

Note: (Double click on each Outlook items, & see its preview another screen individually)

Visit on this link to see the entire process: - How to Open/ View OST Files?.

Will this software allow users to view data from corrupt or inaccessible Outlook OST files?

Yes, OST viewing tool is specially made to access data from all type of OST files. Easily users can open corrupt/ encrypted/ orphaned OST files.

For opening OST files and accessing its inner data items, it this tool need MS Outlook?

The software was created specifically to open OST files outside of Microsoft Outlook. Additionally, users may use this program to access OST files without the need of MS Outlook or Exchange environment.

In addition to emails, is this tool shows Outlook contacts & calendar items from OST files?

Yes, users may get a clear preview of every OST file's contents inside this software (including- Outlook emails, contacts, calendar, journals, notes, and other mailbox items.).

While opening OST file's emails is this tool shows their associated attachments?

Yes, this tool displays emails with all relevant details, including header information (like- to, bcc, cc, from, subject, etc.) and attachments.

Can I add two Outlook OST files at one time in this software for viewing their inner data items?

Add one or more OST files in a single process using the software, with two choices for file selection and addition of OST files: -
  • Select Single OST: - Add a single OST file to the software by selecting and searching an OST file manually.
  • Select OST in Bulk: - Choose a folder containing several OST files and import them all at once.

Is this providing any option for searching OST files from unknown locations of user's drive?

Users can utilise the OST file search option if they are unsure of where their OST files are located. This feature helps users search their local drives for OST files to import them into the software.

Will this software show each Outlook item from OST file on separate screen?

Yes, each Outlook item from OST file users may in a separate window. Users only need to double click on each OST file item to see it on separate screen.

Can I Open OST file of a 100GB size for viewing Outlook items using this software?

Yes, users are free to open OST files of any size (from lower to larger). Additionally, software is tested to ensure error-free opening of OST files of all sizes.

With this software can I open an OST file of MS Outlook 2021 edition?

Through this OST reader tool, users may open OST files efficiently of all MS Outlook Editions. Opens OST files (produced by Outlook 2021, 2019, 2016, 2013, and previous versions) without any problem.

Is any user without having any technical knowledge can operate this software?

Yes, users don't need any form of technical knowledge to use this software to read OST files. Anyone may use the software to quickly inspect entries in an OST file because of its user-friendly graphical interface.

Can execute this software on any older edition of Windows O/S to view OST files?

Yes, users of Free OST Viewer may run it on every version of Windows, including older ones. All Windows versions, including Windows 11, 10, 8.1, 8, XP, Vista, and lower all are supported for executing this software.

What are advantages of upgrading to pro and pro plus edition of OST file viewer software?

Users of the OST Viewer pro and pro plus editions may convert and migrate OST files into other alternatives in addition to viewing Outlook items.