Why convert OST files?

Converting OST files to PST allows for easy data access in Outlook, as both file types belong to Outlook but are created through different email servers. Here are some more reasons for it:

Salient Features

Ensure effortless and secure conversion of OST files with top-notch features of the OST to PST Converter software.

Convert OST to PST

Convert OST to PST The software allows the smooth migration of OST items to PST files. It lets you export OST files to all MS Outlook versions, including Office 365. Efficiently converts bulk or large-sized OST files, even during Exchange Server downtime or Outlook sync issues.

Export OST to Office 365 Mailbox

Export OST to Office 365 Mailbox Export OST file items to Office 365 without data loss. The software simplifies the process with easy import/export, and the mapping feature ensures seamless OST-to-Office 365 mailbox connections.

Corrupt OST Recovery

Repair Corrupt or Inaccessible OST File If your OST file is corrupt or inaccessible, the OST to PST converter tool helps you repair it immediately before converting it to a PST file. It offers secure mailbox recovery, including existing and deleted emails, attachments, and calendar items, addressing all OST corruption issues. Read more...

Restore OST to Exchange Server

Restore OST to Live Exchange Server Effortlessly migrate OST file data to the connected email server like Exchange Server, Lotus Domino, and Novell GroupWise. The tool’s mapping feature lets you easily map OST file items with the Live Exchange mailboxes. It also allows restoring OST files to various Exchange Server versions, including 2019, 2016, and previous editions. Read more...

Migrate OST Items to Gmail Account

Migrate OST Items to Gmail Account Utilize the tool’s intuitive feature to export OST file items to web-based emailing platforms, like Gmail, Yahoo, iCloud, Google Apps, Outloook.com, and AOL. The tool ensures no data loss while migrating to a Gmail account.

OST to MBOX Conversion

OST to MBOX Conversion The software provides an additional benefit to securely migrate OST data to MBOX file of Apple Mail, Thunderbird, Entourage, Eudora, Postbox, Netscape, and many more. Read more...

Converts Encrypted OST Files

Converts Encrypted OST Files The software rescues deeply damaged encrypted OST files. It scans and recovers mailbox data, then converts them to PST format for easy access. The resulting PST file maintains Outlook's default encryption for security.

Recovers Deleted Items

Recovers Deleted Items The tool recovers the permanently deleted items from the scanned file using a highly advanced algorithm. Securely restores all items, including emails, contacts, notes, calendars, tasks, events, etc., with complete integrity.

Preview OST Mailbox Items

Preview OST Mailbox Items Get a full mailbox preview of recovered OST items, allowing users to review emails, attachments, tasks, calendar entries, and contacts within the Software Console.

Advanced Filters for Selected Email Migration

Advanced Filters for Selected Email Migration Utilize the multiple filtering options of the OST to PST converter tool to ensure efficient migration of essential OST file items. Customize your selection based on item type, date range, folder name, and other filter criteria for a tailored data transfer.

Save OST Emails to Multiple Formats

Save OST Emails to Multiple Formats Save the OST emails in different messaging formats like PST, DBX, MSG, EML, TXT, RTF, HTML, MHTML, DOC, & PDF. This feature helps users to view the OST file contents in different applications like Outlook, PDF reader, text reader, etc.

Split PST by File Size

Split PST by File Size Efficiently manage your large-sized PST files with the integrated splitting function. This feature lets you split a PST file according to size – 1GB, 2GB, 3GB, etc.

Find Messages

Find Messages Easily find specific OST file messages using the 'Find' option. Enter keywords and utilize search parameters like sender, recipient, subject, attachments, and date to locate the desired emails quickly.

Create Graphical Report

Create Graphical Report The inbuilt File Analysis Report feature of the tool allows you to generate a graphical report of the total items migrated from OST to the PST file. You can create the report based on four different parameters: Mail Flow Density by Date, senders, item types, and interaction between users.

Free OST to PST Converter

Free OST to PST Converter Download the free trial version of the tool, featuring preview and saving capabilities. Test the software’s functionalities before purchase. The trial version saves up to 25 items per folder in PST, MSG, and EML file formats.

Search OST Files in System Automatically

Search OST Files in System Automatically Search for all the OST files in the specified System drive or folder with the integrated Search feature. The output is quick, and users need not look out for OST files at the system location manually.

Why should you use the software?
Save emails to various files
Save emails to various files

Need versatile email data to follow some industry compliance or for simple backup purposes? Convert your OST files into PDF, MSG, EML, RTF, TXT, HTML, and DOC formats. Our tool ensures data flexibility, allowing access in different email clients, browsers, and readers, and complies with industry requirements.

To save OST data to Live Exchange Server
To save OST data to the Live Exchange Server

Sometimes, businesses need to move their account data to a Live Exchange Server for better collaboration with clients. So, instead of recreating the file at Live Exchange from scratch, users can easily export their OST file data, including contacts, calendars, and notes, with our efficient solution.

Save data to web-email clients
Save data to web-email clients

If you plan to migrate Outlook emails to various platforms, conversion is the best solution. Our OST converter tool lets you change the format of OST files to MBOX or save them directly to Office 365, IBM Domino, GroupWise, Gmail, Yahoo, AOL, iCloud, and other accounts.

How does it Work?
STEPS FOR OST File to PST Conversion

The OST to PST Converter software is integrated with advanced QFSCI algorithms. To ensure a smooth OST to PST conversion, you need to follow the steps mentioned below:

Select the source OST file
Displays the preview of restored mailbox items
Select the mailbox folder(s) that you want to save

Software Prerequisites & Recommendations

Quick links

About Software

  • Version: 21.1
  • Release Date: Jan 2021
  • License Type: Personal, Home, Corporate & Technician

Version Support

MS Exchange Server - 2019, 2016, 2013, 2010, 2007, 2003, 2000, 5.5 and 5.0

MS Outlook - Office 365, 2021, 2019, 2016, 2013, 2010, 2007, 2003, 2002, 2000, 98 and 97

Outlook Express - 6.0, 5.5, 5.0 and 4.0

System Requirements

  • Hard Disk

    50 MB of disk space

  • Memory

    128 MB Minimum

  • Processor

    Intel® Pentium Processor compatible (x86, x64) or equivalent

  • Operating System

    Windows 365, 11, 10, 8.1, 8, 7, Vista, XP, 2000, 98, NT, 95 Windows Server 2016, 2012, 2008 R2, 2008, 2003 R2, 2003

Software Guides

Free Trial V/S Full Version
Software Features
Trial Version
Full Version
Converts OST File to PST Yes Yes
Converts large-sized OST files Yes Yes
Preview of Entire Converted Data Yes Yes
Saves to PST, PDF, DBX, EML/MSG, HTML etc. Yes Yes
Exports OST to Live Exchange/Office 365 Yes
(24x7) Free Technical Support Yes Yes
Saving Capabilities Save 25 items only Save Unlimited Data
Free Download 100% SECURE Buy Now
Frequently Asked Questions
The software offers a simple process to convert OST files. Here’s a quick guide:
  1. Open the tool, select your source file (OST) using the Browse button, and click on Next
  2. Read the details written on the Information page. Click Finish
  3. The software will scan and retrieve all data from your source file
  4. After scanning, preview the recovered items within the tool
  5. Choose the items you wish to convert and click 'Save.'
  6. Pick the PST format as your target and select the destination folder to save the file
  7. There are various filtering options depending on the features of the OST file. You can apply them based on your requirements. Then, click Next
  8. The tool will transform your selected items into a PST file seamlessly. Click OK.
OST files are local copies of Exchange Server data in Outlook. They're usually stored on the default system drive. To know about the default file location of the OST file and how to change it, visit this link - https://www.nucleustechnologies.com/blog/how-can-you-change-the-location-of-ost-file-in-outlook/ The software also has a smart Search feature to find OST files from the specified system drive for recovery and conversion.
Yes, you can easily convert your email data format without the need for MS Outlook. Kernel for OST to PST Converter tool convert large, orphaned, and inaccessible OST files to PST format while maintaining data integrity.
The OST converter tool lets you recover and migrate all mailbox items, such as emails, attachments, drafts, contacts, tasks, calendars, etc.
Yes, the tool has multiple filtering options to convert items as per your requirements. It allows you to select the mailbox folders and apply filters like From, To, Subject, Folder Name, Item Type, and Date Range. Also, it has an additional option to exclude deleted items at the time of conversion.
The tool migrates OST files generated by different webmails like Gmail, Outlook.com, Yahoo, etc., in IMAP configuration. Also, it supports Exchange OST files.
No, it does not. It scans your OST file and recovers the entire data without altering its integrity. The tool preserves the complete mailbox hierarchy and properties after the conversion.
Yes, the tool can smoothly convert an OST file of any size to a PST file without worrying about file size restrictions. Also, the tool lets you split the large-sized PST file to make it safer and manageable.
The OST Converter tool has a unique feature of splitting a file. You can select a size limit in GB. Once you select the size there, let's say 2GB, and your file is 6 GB, at the end of the process, your file will be saved in 3 different files with 2GB size each.
Yes, you can, as the tool doesn't need a live Exchange connection for it to work. So, you can use this tool even without an Exchange connection.
You can do this even without buying the tool. The free version of our tool offers a preview of the entire OST data. You can save up to 25 items per folder to some selected formats. So please try it.
With our OST file Converter tool, you can convert what you can see. Just download the free version of the tool, select the OST file, and preview the data. If you can view and read the item, you can convert it too. You can also test it by saving 25 items from the risky folders to the 'trial version saving formats.'
Home, Corporate, and Technician licenses of the tool come with lifetime validity, and you only need to pay once. Also, you can upgrade the tool to the latest version with the existing license. However, the Personal license of the tool is valid for one year only; you need to upgrade it next year to continue using it.
In the demo version of the Software, you can only convert 25 items per folder. Whereas you can convert the entire OST file with the paid version of the software.
In the menu bar, you can see the Buy Now option. You can click on it, and it will open the buy page showing various categories of our licenses. You can purchase according to the number of OST files you want to convert.
What customers say about Kernel for OST to PST
rating5 (4.9 / 5) 847 Reviews
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A reliable solution for OST problems.

Kernel for OST to PST Converter is a reliable tool. It smoothly converted my damaged OST files, and I am so glad to have my data back. Definitely worth every penny.

Tristin Gentry
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