Top 5 OST Files to PST Converters of 2024/2025

Has it ever happened that you needed to access your Outlook data while offline but weren't sure how it was stored? That's what OST files are for; they let you keep working or accessing your emails and contacts, even offline. Though this approach works best for offline use, there are times when you might need to back up your data in an easier format to manage and transfer.

That's when PST files are needed, as they keep all your Outlook data in one place, making it simpler to organize and back up. Moreover, converting the OST file into PST is important to ensure you won't lose anything if something happens to your OST file. If you are curious to know how to make this conversion happen, keep reading this article to discover the best OST file to PST converter.

Part 1. What Are the Key Features of an OST to PST Converter?

While looking for an OST file to PST converter, choosing one that offers the right features is essential to make the process smooth. Therefore, here are some essential features mentioned that should be considered when you're hunting for top converters.

1. Support for Batch Conversion: If you have multiple OST files to convert, batch conversion can save much time. So, selecting a converter that supports users in converting multiple files at once without compromising the quality is important.
2. Preview Functionality: When you are choosing a converter for your OST file, ensure that it provides a preview option. This is especially helpful for ensuring that no data is missing and the file is intact before conversion.
3. High-Quality: The converter you choose should be able to perform accurate and complete conversions. It should preserve the structure of your OST file, including emails, attachments, calendars, and other data.
4. Compatibility Feature: Ensure that the converter supports the version of Outlook you're using and the operating system. This guarantees smooth operation and avoids compatibility issues during the process of conversion.
5. Security and Privacy: As your emails and data contain sensitive information, the tool you choose must guarantee the security and privacy of your data. Therefore, choosing a converter that doesn't store your data or transmits it to any third-party server is essential.

Part 2. Best and Reliable OST File to PST Converters

If you desire to convert OST to PST, it is essential to pick a tool that does the job reliably and accurately. For your ease, we have compiled a list of the top 5 converters to make this conversion process simple and hassle-free.

1.MailsDaddy OST to PST Converter

When considering converting an OST file into PST, MailsDaddy OST to PST Converter offers unlimited conversion in just one click. It enables users to preserve the structure and format of their OST files while converting them into PST. Moreover, it also quickly scans and accurately repairs damaged or orphaned OST files.

Key Features

1. Mails Daddy provides the option to split large OST data files during the transformation to proceed with the process smoothly.
2. It supports users in selecting multiple OST files for transferring offline data into PST, Office 365, and HTML formats.
3. This tool also facilitates generating previews of their emails and exporting complete OST data.

2.SysTools OST to PST Converter

SysTools is well known for offering a variety of data recovery tools, but their OST file-to-PST converter is no exception. This tool supports the conversion of OST files into various other options apart from PST, such as MSG, NSF, and EML. Besides, users can easily transform their OST file to PST without exchange profile or server connectivity.

Key Features

1. This converter can export selected items from any folder and category of your choice.
2. It allows users to convert multiple OST files into PST format simultaneously with fast speed and accuracy.
3. With the help of SysTools, one can transform OST to PST with emails and journals.

3.eSoftTools OST to PST Converter Tool

ESoftTools is the most sophisticated solution for offline OST file recovery or conversion of OST to PST, as it supports unlimited file conversion. This tool also facilitates users with the bulk conversion of files into a wide range of formats, including PST, EML, and IMAP. Not only this, but it also possesses the ability to recover OST files and Outlook PST files.

Key Features

1. Users can split large files into smaller ones and can easily avoid data file size issues.
2. This tool provides eight naming convention options for saving emails with unique names.
3. One can use eSoftTools to preserve the email structure with statuses such as read and unread.

4.Stellar OST to PST Converter Tool

This OST file-to-PST converter transforms your OST file and converts encrypted IMAP files to PST. It also converts inaccessible files, which can be imported back to the exchange server and accessed through Outlook. Moreover, this tool can migrate OST files to Microsoft 365 without disturbing their original format and structure.

Key Features

1. Stellar can extract data from OST files even when the mailbox is no longer active on the server.
2. It can also successfully convert large OST file sizes into PST file format.
3. This tool enables users to convert all their emails and attachments with 100% accuracy.

5.PST Walker OST to PST Converter Tool

To convert Outlook OST files to PST, PST Walker offers command line options for converting items from OST to PST files. It also lubricates the process by allowing users to extract only relevant items they need, saving time and effort. Furthermore, with the help of PST Walker OST to PST Converter Tool, one can recover deleted and orphaned OST files for conversion.

Key Features

1. This tool can be used as a portable application and can also be installed as a Windows application.
2. It does not require internet or authentication from the Microsoft Exchange server to process conversion.
3. Using this tool, one can convert multiple files to PST at once while saving time and cost.

Part 3. One-Click Superior Solution to Fix Corrupted or Damaged OST/PST Files

After discussing OST files with PST converters, another issue that people might sometimes face is corrupt and damaged OST/PST files in Outlook. This can be frustrating, as it results in the loss of important data, but fortunately, there is a reliable solution to fix this issue, which is Repairit for Email. With this exclusive Outlook repair tool, users can add emails in batches without any size limit, and repair is done in minutes.

In addition, this all-in-one desktop solution promotes the recovery of deleted Outlook items, including emails, folders, and tasks. Being a one-click solution to many problems, it supports repairing virus attack problems on your PC and Mac.

Key Advantages

1. Compatibility: This tool ensures wide compatibility and works with Windows and Mac systems to repair both PST and OST formats.
2. One-Click Repair: Users can scan and repair their corrupted OST or PST files with just a single click while saving time and effort.
3. Repairs Outlook Corruption: In case of Outlook malfunction, Repairit for Email assists one with repairing all inaccessible emails.

Wondershare Repairit for Email

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• Repair damaged PST & OST Files in Outlook in all Email corruption scenarios, such as hard disk crashes & bad sectors, virus attacks & tojan horse, outlook corruption & malfunctions, improper shutdown procedure, etc.

• Restore Outlook Emails deleted for a long time and extract the Email messages, folders, calendars, etc. within seconds.

• Repair corrupted Emails and restore deleted Emails with a 100% success rate.

• Repair Emails in bathes without size limits and support to preview all of them before saving.

• Compatible with Windows 7/8/8.1/10/11, Windows Server 2012/2016/2019, and MacOS X 10.11~ MacOS 12 (Monterey).

Simple Step-by-Step Tutorial to Fix Corrupted OST/PST File via Repairit for Email

If you're dealing with corrupted OST or PST files in Outlook, you must recover your valuable emails and contacts. So, follow the comprehensive steps below and repair your damaged files using Repairit for Email.

Step 1. Access Repairit for Email and Import File

Launch this innovative and advanced email repair toolbox on your PC or MacBook and press the "+Select File" button to import your corrupted OST/PST file for repair.

Step 2. Initiate the OST/PST File Repairing Process

You can also use the "Find" button to search for damaged emails from various locations. To start the repair procedure after importing the OST/PST files, tap the "Repair" button at the bottom.

Step 3. Preview the Files and Save the Repaired One

Preview every email that has been fixed on the left panel after the repair procedure is finished. Then, click the “Save” option and export the repaired OST/PST files after double-checking the appropriate email file to verify its content.

Conclusion

In summary, using a safe and reliable OST to PST converter makes the transformation process more convenient. However, if you're facing issues with corrupted files, Repairit for Email is there, as it not only repairs damaged files but also recovers your data. So, it's a one-click solution to make all your Outlook data secure, accessible, and fully restored without any hindrance.