Free OST to PST Converter Tool

Free OST to PST Converter Tool

Free Windows-based OST to PST converter to convert healthy OST files to PST without Outlook or Exchange Server. Download and open the tool to convert OST files up to 500 MB for free. It also extracts email addresses and attachments from OST files when needed.

  • Convert complete or selected mailbox data from healthy OST files to PST.
  • Extract email addresses from OST emails and save them in XLSX, CSV, or Outlook Native CSV format.
  • Extract email attachments and save them separately using include/exclude file extension filters.
  • Add OST files manually or automatically locate them on your PC.
  • Select and convert individual or multiple OST files to PST.
  • Preview emails, message details, attachments, and other mailbox data before conversion.
  • Convert OST emails from a specific date range using date filters.
  • Split the output PST file based on your selected file size.
  • Skip empty folders and generate a conversion log report after export.
  • Supports Windows 11, 10, and other supported Windows versions.

Key Features of Free OST to PST Converter

Explore various features and capabilities of free OST to PST software.

Convert OST Files Without Outlook

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The free OST to PST converter easily converts single or multiple OST files to PST without installing Microsoft Outlook or Exchange Serve. It offers a direct solution for users to export OST file to PST.

Extract Email Addresses from OST

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Extract email addresses from Contacts, Email, Calendar, Tasks, and Journal items stored in an OST file. The tool allows you to save the extracted email addresses in XLSX, CSV or Outlook Native CSV format.

Extract Attachments from OST Emails

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The offline OST to PST converter allows you to extract attachments directly from OST emails. Use file extension filters to include or exclude specific attachment types. You can also extract attachments without file extensions to desired location.

Preview OST Mailbox Data

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Preview OST mailbox data before exporting it to PST. You can browse the folder hierarchy, access emails and check sender, recipient, subject, date, attachment details and available email content from the dashboard.

Filter OST Emails

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Filter OST emails by sender, recipient, subject, message body, read/unread status, attachment availability and date range. The tool also offer search filters option to find specific emails before export.

Export OST Emails by Date Range

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With free OST to PST converter, you can specify a start date and end date to export emails from a particular period. Only OST emails that match the selected date range are processed for final PST export.

Manage Output PST file

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Use Split feature to divide the exported PST files into smaller sizes. Choose the preferred size such as 1GB, 1.5GB, 2GB, 2.5GB, etc., and save the final resulting PST files at your selected location.

Skip Empty Folders and Generate Reports

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You can also exclude empty mailbox folders during the OST to PST conversion process. The tool can also provide a conversion log report so you can keep the record of your OST to PST process for future references.

Outlook and Windows Compatibility

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The free OST to PST Converter supports Outlook or Microsoft 365, 2024, 2021, 2019, 2016, and previous Outlook versions. It works on Windows 11, 10, 8.1, and Windows Server 2022, 2019 and earlier supported versions.

Start Free Conversion!

Download free OST to PST Converter

Convert OST files up to 500 MB to PST without Outlook or Exchange Server.

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FAQs

Know the common questions and answers asked about the OST to PST converter tool:

How to Convert OST to PST with a Free OST to PST Converter?

Follow the steps mentioned below to convert OST files to PST:

  1. Download free OST to PST Converter, then open it and click on Add Source.
  2. Click Browse to select OST files from your PC.
  3. Select folders from the left tree and click on the emails to preview them.
  4. Choose the desired emails and right-click to select Export Messages.
  5. Select PST format and set your saving preferences.
  6. Provide the file saving path and click Export to begin the process.
Does this Free OST to PST Conversion require Microsoft Outlook?

No, the tool does not require Outlook installation to convert OST to PST.

What is the Maximum OST File Size Supported by the Free OST to PST Tool?

The software allows the conversion of an OST file up to 500 MB in size for free.

How Do I Extract Email Addresses from an OST File with free OST to PST Converter?

Here is the quick process to extract email addresses from an OST file:

  1. Launch the tool and add source OST files from your local storage.
  2. Select the mailbox folder and go to the Extract dropdown.
  3. Pick Extract Email Addresses from the options.
  4. Click Browse and provide a location to save your file.
  5. Apply the filters and saving options. Click List to preview email addresses.
  6. Click on Save as and select the file format to begin the export.
What Types of Data Can I Export from an OST File?

The tool can export emails, contacts, calendars, attachments, notes, tasks, and journals from an OST to PST.

How to Extract Attachments from OST Emails?

Launch the OST to PST tool and follow the step-by-step process below:

  1. Click on Add source and browse the source OST files from your local storage.
  2. Select folders from the left pane and click on the Extract dropdown.
  3. Choose Extract Attachments and click Browse to choose a saving location.
  4. Apply all the suitable options to extract the attachments.
  5. Click Save to begin the process.
Is It Possible to Export OST Emails by Date Range with free tool?

Yes, the tool has Date filter to allow users to export and save OST emails within a specific date range.

Does the Free OST to PST Converter Work Offline?

Yes. The free OST to PST Converter works completely offline.

Is My OST Data Stored on a Server During Conversion?

No. The tool processes OST files locally, and none of the uploaded files are stored on the server during conversion.

Which Windows Versions Are Supported by the Free OST to PST Converter?

This tool works efficiently with major Windows versions, including Windows 365, 11, 10, 8.1, and older versions, and Windows Server 2022, 2019 & older versions.

How Does the Tool Handle Large Output PST Files?

The tool has an option "Split PST file" to split large output PST files into multiple smaller PSTs to handle large mailboxes.

Do I Need Technical Knowledge to Convert OST to PST?

No, with the simple and user-friendly interface of the tool, you do not need to possess any technical knowledge to convert OST to PST.

Upgrade for Unlimited OST to PST Conversion

Free

$0

  • Converts OST files to PST format
  • Converts OST file Up to 500 MB
  • Find specific items in OST files
Personal

$49

  • Validity - 1 Year
  • System - 2 PC
  • All Free Feature
  • Converts bulk OST files to PST, MSG, PDF and other 6 formats
  • No Limition on file size

What Our Customers Say?

John Wilson
John Wilson IT Manager

"We had a major issue with corrupted OST files, but this OST to PST tool saved the day! It converted the entire mailbox to PST with no data loss, and the preview feature was really helpful. Highly recommend for any IT professional dealing with OST issues!"

Ashley Evans
Ashley Evans Marketing Director

"Our IT team needed to recover several years' worth of email data from a damaged OST file. This OST tool recovered and converted data quickly and accurately. The option to split large PST files is much more efficient when the OST file is large. We thank the OST to PST tool!"

Michael Brown
Michael Brown Systems Administrator

"I’ve used other OST tools before, but this OST to PST tool is the most reliable and easy to use. The bulk OST conversion feature is a game-changer, and the ability to directly export to Office 365 made migration effortless. Excellent tool!"

Oliver Bennett
Oliver Bennett HR Manager

"I was able to recover all our critical employee emails from a corrupt OST file with this powerful OST to PST tool. The process was much easier than expected. The Save Snapshot and graphical analysis report features add extra support for user convenience. Most trustworthy solution!"

Mark Wuffet
Mark Wuffet Financial Analyst

"I had to convert several large OST files that were affecting performance. This tool handled the multiple oversized OSTs with no issues and let me split them into manageable PST files. Its simplicity and accuracy were impressive!"

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Software Specification

Review the complete system requirements and technical details for optimal software performance.

 

Software Download

Size : 40.0 MB

Version : 26.0

Trial Limitations

The free version convert 500 MB of OST file.

System Specifications

Hard Disk Space
1 GB of free hard disk space

RAM
Minimum 4 GB RAM

Processor
Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz Processor

Pre-Requisites

  • Microsoft .NET framework 4.5 or above should be installed.
  • If you are using Windows 11, 10, 8, 7, then launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows – Windows OS 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019, 2016, 2012 R2, 2008
  • Microsoft Outlook – Outlook for Microsoft 365, 2024, 2021, 2019, 2016, and previous versions

Electronic Delivery

Get the automated download link of the tool and activation key via email in 15 minutes.