Outlook data file OST is used to store the user profile data and this file format (.OST) is only supported with MS Outlook. For a person which has no outlook installed on their computer, it is difficult to read the OST file data. So, here in this write up we are going to discuss the method by which users get the solution for How to open Outlook data files (.ost) without Outlook requirement.

Outlook creates OST file when a user configures his account with Exchange settings. A copy of all Exchange Mailbox data like- emails, contacts, tasks, notes, and other items outlook stores in it. OST files facilitate users to do their works in offline mode when the internet connection is slow or any other kind of problem. But with these features, it also has a problem. The OST file is only supported with MS Outlook.

Users Query

“My Team leader has sent me an OST file with some important emails in it, but when I open it with Outlook it shows a corruption error message. I want a free solution to open OST files without Microsoft Outlook and Exchange server requirement which has the ability to open OST files including emails, contacts, calendar, to-do list, notes, journals, attachments, and other components”

To Read/Open OST files without MS Outlook there is no direct method is available. After seeing this problem we have introduced a technique to do the process of opening OST file.

How to Convert OST to PST Format without Outlook

To open the OST files without Outlook, there is a solition known as eSoftTools OST to PST Converter Software. Through through this unique application user can open/view Offline OST files data without any additional application requirement. With this tool you can open orphaned OST files along with the attachments. The software can browse email, contact, calendar, without any technical problem.

Steps to Open OST file with eSoftTools OST Converter

  • Download & Install eSoftTools OST to PST Converter Software.
  • After this, click on Select OST button from the welcome window of the software.
  • To add OST file a window will now appear on your screen with two options
    Select File:- To select ost file from known location
    Search OST Mailbox:- Search all outlook data files and choose the required once from drive.
    After selecting the OST file press the Start Scanning Process button.
  • Now the software will scan and Open OST file to read its inner data.
  • Software will show you all folders from OST on the left panel and provides an email preview on the right panel of software screen.
  • Now choose the required folders and click on Save OST button to convert OST to PST or another file format.
  • Choose the conversion option from the provided list as per your requirement.
  • For OST to PST Conversion choose the option Export to PST. Select the file saving location then press the Convert button to start the conversion process.

Wrap Up

Opening an orphaned OST file is a challenging task and the manual method does not work. Hence, it is better to utilize professional software that can help the user to read/view and Open OST file without Outlook or any email application. The software is powerful and there are no chances of data loss during the process of Opening OST. We hope you find the above information useful. A free demo version of this tool is also available to verify the software functionality.

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