How to Add an OST File to Outlook as a PST File?

ost to pst converter

Managing email data efficiently is crucial in professional settings, and Microsoft Outlook offers robust tools for handling offline and archived data through OST (Offline Storage Table) and PST (Personal Storage Table) files. If you need to incorporate an OST file into Outlook as a PST file, whether for accessing archived emails or transitioning between systems, this guide provides a comprehensive overview of the process.

Understanding OST and PST Files

OST File: An OST file is an offline folder in Outlook that allows you to access your mailbox data even when offline. It synchronizes changes with the server once a connection is established.

PST File: A PST file, on the other hand, is a local data file in Outlook that stores copies of emails, calendar events, contacts, and other items. It’s typically used for archiving or backing up Outlook data locally on your computer.

How to Find OST Files and Location?

Step 1: Locate and copy the OST File

Find the OST File: OST files are stored in a hidden folder on your computer. The default path for OST files is usually:

Windows 10/8/7: C:UsersusernameAppDataLocalMicrosoftOutlook

Windows XP: C:Documents and SettingsusernameLocal SettingsApplication DataMicrosoftOutlook

Replace username with your actual Windows username.

Copy the OST File: Once located, make a copy of the OST file to a location where you can easily access it later.

Reasons to Change OST File in Outlook PST Format

Moving an OST file to Outlook, typically as a PST file, can be motivated by several practical reasons, each aimed at enhancing data accessibility, security, and productivity. Here are some compelling reasons to consider moving an OST file to Outlook:

Data Accessibility and Offline Access:

Converting an OST file to a PST file allows you to maintain continuous access to your mailbox data, regardless of your connectivity status to the server.

PST files are stored locally on your computer, enabling you to access your emails, contacts, calendars, and other items even when you are offline.

Improved Performance and Efficiency:

By working with a PST file, you reduce the load on the Exchange server, potentially improving overall performance for both you and other users.

Local PST files often provide faster access to emails and other data compared to retrieving them from the server, especially for large mailboxes or slow network connections.

Archiving and Organization:

PST files are ideal for archiving old emails and data that you may not need to access frequently but want to keep for future reference.

You can organize and manage your emails more efficiently within Outlook by utilizing PST files to categorize and store data based on projects, clients, or other criteria.

Security and Privacy:

Storing sensitive or confidential information in PST files on your local computer can enhance security by reducing the exposure of data to potential security breaches or unauthorized access.

PST files can be encrypted using built-in Outlook features or third-party encryption tools, adding an extra layer of security to your archived data.

moving an OST file to Outlook as a PST file offers numerous benefits related to data accessibility, backup, performance, organization, compliance, and security. Whether for everyday productivity or strategic management of email data, utilizing PST files within Outlook enhances your ability to manage and safeguard critical information effectively.

Professional Solution to Add OST File in Outlook PST File Format in Bulk at Once

CubexSoft OST to PST Converter is a professional tool designed to facilitate seamless and secure conversion of OST files into PST format. Here’s an in-depth look at its features, benefits, and how it can streamline your email management tasks:

Key Features of CubexSoft OST to PST Converter:

Batch Conversion: Convert multiple OST files to PST format in a single operation, saving time and effort, especially useful for bulk migration scenarios.

Selective Conversion: Allows users to selectively choose specific folders or items within OST files for conversion to PST format, providing flexibility and customization.

Preserve Data Integrity: Ensures that all email components including attachments, metadata (like To, From, Date, Subject), folder hierarchy, and other attributes are preserved during the conversion process.

Maintain Folder Structure: Retains the original folder structure of OST files after conversion into PST format, facilitating easy navigation and organization within Outlook.

Preview Option: Preview feature enables users to preview OST file contents before initiating the conversion process, ensuring accuracy and allowing adjustments as needed.

Compatibility: Supports conversion of OST files created by any version of Microsoft Outlook, including Outlook 2019, 2016, 2013, etc., ensuring broad compatibility across different environments.

No File Size Limitation: Capable of handling large-sized OST files without any file size limitation, making it suitable for enterprises and users with extensive email archives.

User-Friendly Interface: Intuitive and user-friendly interface ensures ease of use, making it accessible even for non-technical users without extensive IT expertise.


CubexSoft OST Converter offers a robust solution for businesses and individuals looking to convert OST files into PST format with ease and reliability. Its comprehensive feature set, user-friendly interface, and efficient performance make it a valuable tool for managing Outlook data effectively, whether for data migration, backup, or accessing archived emails offline.