OST Viewer FreewareAll Your OST Data, One Powerful Viewer

(Average Rating 4.7 Based on 223 rating)

OST Viewer software is the best software to view or read their OST files without Microsoft Outlook on the system. This OST Viewer tool ensures that you can open and analyse the files, including the mailbox data such as contacts, calendars, emails, attachments, journal, etc. Using this software, you can open multiple files and automatically fetch the OST files.

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OST Viewer
Benefits of using the OST Viewer Freeware
  • Open and view any OST file without Outlook.
  • Preview emails, attachments, contacts, calendars, tasks, and journals.
  • Save OST data in multiple formats like PST, PDF, MBOX, EML, MSG, EMLX, CSV, and HTML.
  • Maintains the original mailbox folder structure.
  • Save resultant OST files to your preferred destination.
  • You can customize the Name of the folder according to your preference.
  • Quickly search and filter emails by keywords, date, or sender/recipient.
  • User-friendly interface for easy navigation.
  • No limit on OST file size or number of files.
  • Compatible with all Windows and Outlook versions, supporting 32-bit and 64-bit systems.

Trial Limitations

The Demo Version makes you familiar with the tool and interface of the OST File Viewer. In this, you can preview the mailbox data, but cannot save or convert more than 50 files. To import more than 50 files, the user has to purchase the license version of the software.

Pre-Requisites

    System Requirements:

      Supported Editions:

        Why use the OST Viewer tool?

        OST Viewer Freeware allows you to effortlessly view OST file data without any issues. It is a completely safe and secure tool that opens OST files without causing errors on your system. The software offers features to read and display all data accurately, ensuring no loss of information.

        Experts & MVP Reviews

        OST Viewer Freeware is a reliable tool for accessing, reading, and viewing OST files without any data loss. It allows you to export all mailbox data into TXT or HTML formats. Additionally, you can select the preferred encryption type to ensure the security of your Outlook OST Viewer.

        Exclusive Key Features of the OST Viewer Freeware

        Access OST Files Without Outlook

        Access OST Files Without Outlook

        The OST Viewer Tool enables you to open and read OST files without installing Microsoft Outlook. The software can easily access OST file data, whether or not the file is connected to an Exchange account.

        Maintain Data Integrity & Confidentiality

        Maintain Data Integrity & Confidentiality

        While using this OST File Viewer, the original folder structure, email metadata (such as To, From, Cc, and Bcc), and attachments are fully preserved. The OST Viewer tool ensures complete data integrity, with no changes or data loss.

        Compatible with Multiple File Formats

        Compatible with Multiple File Formats

        OST File Viewer Software saves mailbox files into multiple formats, such as PST, PDF, MBOX, EML, EMLX, MSG, CSV, and HTML. With the help of this utility, you can make sure to convert files according to the different email client compatibility.

        Comprehensive Preview of OST Mailbox

        Comprehensive Preview of OST Mailbox

        After adding an OST file, the OST Viewer displays the complete mailbox structure in a preview layout. Users can easily navigate folders like Inbox and Sent items while previewing emails, attachments, contacts, calendars, journals, and notes.

        Advanced Search for OST Mailbox Data

        Advanced Search for OST Mailbox Data

        The integrated search function allows users to quickly find specific mailbox items using filters like To, From, Subject, date range, or keywords, providing fast and easy access to important information without manually navigating through folders.

        Date Filter Feature

        Date Filter Feature

        This software offers a date filter option that will help you to get a specific time period of data for easy accessibility of the data for a time range. This will help the users to get the data from large mailbox files.

        Bulk & Unlimited File Conversion

        Bulk & Unlimited File Conversion

        OST Viewer allows you to open and view OST files of any size while efficiently handling large mailboxes. This software ensures smooth performance without delay, making it suitable for frequent use in professional and organizational environments.

        Safe, Secure, and Free Tool

        Safe, Secure, and Free Tool

        The Demo Version of OST Viewer Freeware is completely free and secure. This free version is designed to let users understand the core functionality before purchasing the license and secure data integrity without any risk.

        Self-Explanatory Interface

        Self-Explanatory Interface

        This software is designed with a simple and clean interface. If you are not from a technical background, you can easily navigate the process. You can select files, preview them, and apply filters without any difficulties.

        Wide Compatibility Across Outlook Versions

        Wide Compatibility Across Outlook Versions

        Outlook OST File Viewer works with all Outlook versions, including Office 365, 2019, 2016, 2013, 2010, 2007, 2003, 2002, 2000, 98, and 97. It is recommended to begin with the latest versions, such as Outlook 2021 and 2019, for the best performance.

        Difference Between Free Version and Full (Licensed) Version

        Product Feature
        Free
        Pro
        Open and Access Data from OST Files
        View OST Files Without Exchange Server
        Export OST File Items to Various Formats
        View Offline Outlook Emails with Attachments
        Open Multiple OST Files Simultaneously
        Automatically fetch OST File Details
        Save exported OST files
        50 Emails Only
        Custom Destination Path
        100% Safe & Secure
        24*7 Tech Support Available

        Frequently Asked Questions

        No, Microsoft Outlook is not required. The OST file Viewer software lets you open and read emails, contacts, calendars, tasks, and journals.

        If you have corrupted or damaged OST files, then you can use the OST Viewer Tool to open the OST files.

        You can open an OST file without Outlook by using OST Viewer Freeware. Simply install the software, load the OST file, and it will allow you to view all mailbox items—including emails, contacts, calendars, tasks, and journals—without requiring Microsoft Outlook.

        Using OST Viewer Freeware, you can view a wide range of mailbox data, including Emails (inbox, sent items, drafts, etc.), Contacts, Calendars, Tasks, Journals, and Notes.

        Yes, OST Viewer Freeware fully supports Unicode OST files. It can open, read, and recover data from both ANSI and Unicode OST files.

        What Customers Are Saying