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How to Import OST File to Outlook Account? Get Perfect Solution

Published By Jamie Kaler 
Rollins Duke
Approved By Rollins Duke
Published On November 8th, 2023
Reading Time 7 Min Read
Overview: Are you finding a method to import OST file to Outlook in Windows? Or want to open OST file in Outlook such as 2021, 2019, 2016, 2013, 2010, 2007, etc. In this article, we will discuss a case study of how can you import multiple OST files without any restrictions. To get the solution in detail, just read out the complete solution till the end.

OST file stores the crucial data for saving Exchange Server but is not so easy to import OST file to Outlook as there is no direct manual way. These files can be opened with a configured profile (Exchange/IMAP) only. Once a user disconnects the server or updates the profile that time OST files get orphaned and cannot be imported into Outlook.

To import the disconnected OST files, we need to change them into Outlook readable format. Generally, Microsoft does not provide any way to relink OST file in Outlook. But Don’t worry, follow the below steps, and easily open OST file in Outlook all versions.

A large number of users are having the query – how can I import OST file to Outlook 2019, 2016, 2013, 2010, etc. Some of the reasons are explained below.

User Query: – I have several former employees’ Outlook files, and need to view them, when they were copied from the former employee’s computer the format of the Outlook file was OST which I can’t import into Outlook (as I don’t know how to). Is there a way to import OST file to Outlook? And finally, how would I convert them, I believe you can do this through the Archive option within Outlook.

How to Open OST File in Outlook Account Manually?

Before performing the below steps, make sure you are able to import OST file to Outlook. If you have orphaned, inaccessible, another user’s OST file, Then move to Method 2.

Step 1: Convert OST Files to PST

  1. Open Outlook >> File Menu >> Open & Export.

    File Menu

  2. Click on Import / Export >> Export to a File.


  3. Select Outlook Data File (.pst).

    Outlook Data File

  4. Choose a specific folder or the complete account.

    specific folder

  5. Check on the Include subfolder.
  6. Enter the destination and get the file.

    Enter the destination

Step 2: Import Resultant Files into Outlook

  1. From the File Menu in Outlook, click on Open & Export.
  2. Click on Open Outlook Data File.
  3. And, view the OST files in Outlook.

How to Import OST File into Outlook Professionally?

As we have discussed earlier OST files or Offline Outlook Data Files cannot be directly opened in Outlook Windows. A huge number of queries are posted on the internet to find a solution. That’s why we developed a solution called – RecoveryTools OST Converter Tool.

Using this application, you can easily convert all those OST files to PST format to import OST file to Outlook. Thereafter, you can import the resultant files directly into the Outlook account.

This mentioned software is also capable of converting/importing/exporting OST files such as converting OST to PDF, converting OST to EML, converting OST to MSG, OST to Windows Live Mail, and OST to Office 365, and multiple others.

Download the software for free to analyze the performance of importing OST file to Outlook:

Note: Using the trial edition of this application you can easily export 25 emails from all folders of OST to Outlook data file format. This process will help you to understand the working process of this tool. For more, you need to buy this product for lifetime use.

Quick Steps to Import OST to Outlook

  • Step 1: Download and install the tool.
  • Step 2: Add the OST using Select Files/Folders.
  • Step 3: Check the needed folders/subfolders.
  • Step 4: Choose PST from the saving option list.
  • Step 5: Browse the path and hit the Convert icon.

How to Open OST File in Outlook in Bulk? Complete Guide

Follow the instructions to access the orphaned, inaccessible, or corrupted, user’s OST file into Outlook all versions. Let’s get started!

  1. Install and run the tool on your existing Windows OS system.

    import OLM to Outlook

  2. Load OST Files from the Manual path or from the default configured Outlook path. You can select them with the help of dual manual selection options – Select Files or Select Folders.

    Load OST Files

  3. Choose only the required folders to perform the selective conversion.

    required folders

  4. After that, choose the PST option from the list of 30+ File formats and email clients.

    required folders

  5. Apply the advanced filter option for selective open OST file in Outlook process.

    advanced filter option

  6. Enable the required other filters i.e., Separate PST per user and Split PST options.

    required other filters

  7. Select the location according to your choice using the Browse button.


  8. Lastly, click on the Convert button to import OST file to Outlook account.

    import OST file to Outlook

  9. Access resultant files and then import them into the Outlook Application.

Now we will import the resultant PST file into the Outlook account.

  1. Launch Microsoft Outlook
  2. Follow File >> Open & Export >> Import/Export.

    Open & Export

  3. Choose the “Import from another program” option.

    Import from another program

  4. Select the Outlook Data File (.pst) option.

    Outlook Data File

  5. Browse the generated PST file.

    generated PST

Advanced & Prime Features of the Software

  • Preserve OST Files Metadata & Properties: The software is designed with advanced algorithms to maintain metadata and all other properties during the import OST file to Outlook accounts. The attributes like To, Cc, Bcc, Subject, Date, and Folder Hierarchy all will be kept preserved and completely secured while using this software.
  • Easy To Use GUI of the Tool: The utility is no doubt one of the simplest ways to import complete data. No Outlook installation is required to perform the conversion as the software is completely standalone to perform its work.
  • Dual Options to Load the OST File: The software is capable of its perfect AI by providing the option of loading OST files on the panel. It provides various strategies to load OST files including the manual selection of files either by Files or by Folders. Apart from it, the software also provides to load of data from the default configured profile location OST file into Outlook.
  • Bulk & Selective Process: The software allows users to easily import OST file to Outlook in bulk at once without having file size limitations. After uploading OST files and folders, users can check the required data from the panel.
  • Compatible with All Windows OS Editions: The software easily runs on all Microsoft Windows OS including Windows 11, 10, 8, and below versions for both 32 and 64-bit OS editions. Use this tool and easily import OST to Outlook without any limitation.

Frequently Asked Questions

  • Ques 1: What is the difference between PST and OST?

    Ans: OST files help you use Exchange Server even when you’re not online. PST files keep data on your own computer. When you set up Outlook to save a copy of emails, it makes an OST file. When you make a new Outlook data file, it creates a PST file.

  • Ques 2: Does Outlook still use OST files?

    Ans: Yes, Outlook uses OST format while you connect your Outlook with IMAP or Exchange server.

  • Ques 3: Is OST better than PST?

    Ans: You can copy PST files to your computer, but OST files work with a server to stay updated.

  • Ques 4: What is the full form of OST in Outlook?

    Ans: OST means Offline Storage Table in Outlook.

The Verge

In the above-discussed article, we take a brief description of all the details regarding how to import OST file to Outlook on Windows. We had discussed both the manual as well as the professional way to carry out better results.

We recommend you to use the expert’s recommended solution which is easy to use and can easily import an unlimited number of OST files into Outlook without imposing any size limitation. For more information, you can connect with us anytime.