OST Converter Tool to Export OST File into 15+ Formats

OST Converter Software for Easy OST Files Conversion

2M+Downloads

Use Kernel OST Converter tool to efficiently convert OST files to MSG, PST, PDF, HTML, and other file formats. Export single/multiple OST files to Office 365, Hosted Exchange, or IMAP servers. Restore all your data from inaccessible, damaged, or unhealthy OST files securely.

Download the trial version and migrate 25 items per folder free

Reliable software to convert OST to single file, such as PST, MBOX, and DBX.

Convert OST file data to multiple files in PDF, EML, MSG, and other formats.

Export OST to email servers, such as Office 365, Groupwise, Exchange, etc.

Migrate OST data to Gmail, Yahoo, AOL, & other web-based email clients.

Advanced filters to convert OST by specific item type, date, folder, etc.

In-built search feature to find OST files within the local storage.

Easily convert ANSI OST to Unicode PST files at the desired location.

Why is Kernel OST Converter The #1 Choice for Enterprise OST Conversion?

Want a robust OST converter tool for secure file conversion? Scroll down to learn why our software is the best choice for enterprise OST file conversion.

Convert OST File to a Single File with Full Integrity

Run the tool to export all the OST data to a single PST File (MS Outlook) or DBX file (Outlook Express) file with full data integrity. Moreover, you can convert OST to MBOX file for easy access on email clients like Thunderbird, Eudora, etc.

Export OST to Multiple Output Files for Granular Control

Export emails from OST files individually with granular control on the file conversion process. Select and convert specific email items from OST files to EML, PDF, MSG or HTML format. Backup, archive, and manage specific email items from the mailbox.

Direct OST to Email Server Migration with Admin Precision

Kernel OST Converter can import OST emails to Office 365 directly. Apart from Office 365, the tool also allows migration of OST file data to other email servers, such as Group Wise, IBM Domino (Lotus Domino), and Microsoft Exchange Server.

Convert OST to Web-Based Email Clients with Zero Data Loss

Directly migrate Outlook emails to Gmail with 100% accuracy and consistency. Additionally, the tool supports an easy export of emails from Outlook OST files to Gmail, Yahoo, iCloud, AOL, and other IMAP based email clients.

Top Features of Our OST Converter Software

Explore the exclusive features of our tool to learn how does it convert OST files to PST or other formats with superior data security.

Convert OST Files to 15+ Formats

Best solution to convert OST to PST, EML, MSG, and several other file formats. Export emails, contacts, and other data to Office 365, GroupWise, IBM Domino, and other email servers. Also, save OST data to Gmail, Yahoo, AOL, and other IMAP-based email clients.

Compatible with all Versions of Outlook OST files

Works efficiently with all OST files generated by any Outlook version, including Office 365, 2021, 2019, 2016, and previous versions. Use the OST file converter on any device with Windows OS version 365, 11, 10, 8.1, Windows Server 2022, 2019 & older versions.

Decrypt S/MIME, OpenPGP Encrypted OST Files

Add any OST file encrypted with S/MIME or OpenPGP encryption methods. The tool first decrypts the encrypted OST files and then allows an easy conversion to PST or other desired formats. Get the resultant file in desired format without any encryption in place.

Convert OST Files Without Exchange Server

No need to establish a connection with the Exchange Server on the device the tool is running. Convert OST files even without Exchange Server or Outlook installed on the dedicated workstation. Requires OST files only to perform the export to multiple destinations.

Hosted Exchange Mailbox to PST

Secure solution that supports all the OST files generated by any version of Hosted Exchange Server. Highly compatible software to export data to PST file with entire email properties (To, Cc, Bcc, From, Subject, Date, etc.) and read/unread email status.

Convert OST Attachments to PDF for Legal Archiving

Convert attachments from OST files and save as PDF files to create a non-editable version of mailbox data within the local or network storage. Extract attachments from OST files to PDF to serve as digital evidence to fulfill the purpose of legal archiving.

Supports large-sized OST file Conversion

No limitations on the size or count of the OST files to add for performing the conversion. Kernel OST Converter allows conversion of OST files of all sizes without any complications during the process. Supports bulk conversion of multiple OST files in one go.

Search Specific Items from OST

Advanced search feature of the OST converter software scans and adds all the files with .ost extension and within the local storage. Run automatic search across the selected drive or directory using parameters, such as sender, recipient, subject, and date.

Direct OST Conversion to Cloud Apps

Directly migrate OST files to Office 365, Lotus Domino, Groupwise, and Live Exchange. Switch to cloud-based email platforms using our OST file converter in just a few clicks. Restore OST file data without any data loss and duplicity in the destination.

Software Features	Trial Version	Full Version
Export OST emails to PST	25 items per folder	Unlimited
Convert OST to PDF, MSG, MBOX, EML, etc.	25 items per folder	Unlimited
Add multiple OST files
Import OST to Live Exchange, Lotus Domino, or Office 365
Migrate OST to email clients, such as Gmail, Yahoo, AOL, etc.
Recover deleted emails from OST
Migrate selective data using multiple filters
	Free Download	Upgrade $49

What Customers are Saying About Kernel OST Converter Software

Ella Morris, Software Engineer

Thankful to Kernel OST Converter that helped me make an easy shift from Outlook to Thunderbird. I used the tool to convert my OST files to MBOX and then imported them into Thunderbird in just a few seconds. I am relieved that I chose this tool and saved my business emails and resources.”

Jack Edwards, IT Admin

We had some corrupted OST files generated by Exchange Server 2016. Due to the corruption, we were unable to access our email communications. But thanks to this tool, which helped us recover and export OST files to PST in Outlook and restored the communication.”

Frequently Asked Questions

Check out the common user queries and their answers to understand all possible scenarios where our tool can be helpful to you.

How to convert an OST file?

Here’s a short process to understand how to convert OST files:

Step 1: Install and launch the Kernel OST Converter software.
Step 2: Click Browse to add manually or use Search button to find & add OST files.
Step 3: Scan the OST file data and preview emails with attachments and properties.
Step 4: Select output file type and apply filters to export OST file data to PST.
Step 5: Provide file saving path and saving preferences to start the file conversion.

Can I export OST directly to cloud platforms without PST?

Yes, you don’t need to convert OST file to a PST file format for accessing it directly on the cloud platforms. Select the desired cloud app as the destination, and the tool will move OST files directly there.

How do you handle encrypted OST files?

Our tool is capable of handling S/MIME and OpenPGP encrypted OST files. You can add the encrypted OST files, and the tool will decrypt the files and then convert it to the selected format.

Is there an OST file size limit?

No, there is no limit on the size of OST files to add in the tool for conversion. You can add OST files of size even more than 100+ GB to convert to PST or other formats.

Can I view OST file content before conversion?

Yes, you can view OST files with a clear hierarchical preview before conversion with the tool. You can click on the email item to get a detailed view in Single View or Advanced Properties View.

Can your tool preserve email formatting in PDF exports?

Yes, you can use this OST converter software to convert OST files with preserved email formatting in PDF format. The structure, layout, formatting, email properties, hyperlinks, etc., all remain intact during the conversion process.

I have large OST files containing multiple mailbox folders. I want the resultant PST files to be of manageable size. Can I convert one OST file to multiple PSTs with this tool?

Yes, use the ‘Split PST File after’ option within the tool to create multiple resultant PST files ranging from 1GB, 2GB, 3GB, etc., according to your requirements.

The workstation that has this OST converter installed is not connected to the Exchange Server. Will this tool still work?

Yes, to convert OST files generated by any Exchange version, there is no need of a connection with the server. Simply run this tool, add the desired OST files, and you can convert them in a few seconds.