OST Converter Software Box Image



100% Verified
4n6 OST Converter Tool

Microsoft MVP's trusted OST Conversion Tool to convert OST files (email, attachments, contacts, calendar, tasks, journals, etc.) in easy steps.

Software Rating (Average Rating 4.9 Based on 1342 Reviews)

  • OST Converter Offers Several Export Option for Emails: EML, MBOX, PST
  • Convert OST File and Save in: PDF, HTML, CSV, TEXT, ICS, and vCard
  • Easily Extract Email Addresses and Phone Numbers from Outlook OST Files
  • Export Complete OST File Data Such As Emails, Attachments, Contacts, etc.
  • Maintains Folder Order, File Header, & Email Header During OST Conversion
  • Not Required: Exchange Server, IMAP Server, and Outlook Installation
  • OST Converter is Capable to Migrate Data on Cloud: Office 365, Gmail, IMAP
  • Convert Inaccessible, Encrypted, and Orphaned OST Files without Limitation
  • Download OST File Converter Tool and Install on Windows 11 & Below Versions

Download Now
100% Safe & Secure

Buy Now
30 Days Money Back Guarantee*

Free Demo Version Limitation: OST Converter will Allow Users to Export Only 10 Email from Each Folder

ost converter

Best OST Conversion Tool Free

OST Converter Supports Multiple Export Options

This is a one-stop solution for IMAP Outlook users. This OST file converter allows users to simply export the entire data from OST files into email and document file formats. Let's go over all the export options:

  • Email Formats: EML, PST, and MBOX
  • Documents Formats: PDF, TXT, CSV, HTML, ICS, vCard
  • Migrate to Cloud: Office 365, Gmail, & Any IMAP Account
  • Desktop Email Client: Thunderbird
  • Extract Email Attributes: Email Address, Phone Number, Associated Email & Phone Number, Attachments, and Contact Photos
ost converter different preview modes

OST Conversion Tool Offers 5 Preview Modes

There are 5 different preview options in 4n6 OST converter tool. Users can now preview data before exporting it in any format. You can view the data in Content, Properties, Message Header, Hex View, and Raw Message preview mode.

4 Steps to Perform OST File Conversion

  1. Download OST Converter Tool and Install on Your System
  2. Browse OST File into Software Environment
  3. Select the desired Export Option from the Opened List
  4. Select Path to Save the resultant File After OST Conversion

Software Features

OST Converter Tool - Main Features

Preview in OST File Converter UI

Preview in OST File Converter UI

OST converter includes an in-built OST viewer feature. It shows complete email folders and their messages within OST Files, as well as message formatting, attachments, email headers, and important meta properties.

  • Content: This format provides the user with a detailed view of the entire information contained in the body of the email as well as attachments.
  • Properties: This format displays detailed information about associated email properties: Message Class, Subject, Client Submit Time, Search Key, and so on.
  • Message Header: OST Converter Tool gives the user a detailed view of the key email properties such as Return – Path, Received, Message–ID, Date, From, To, etc.
  • Raw Message: This format gives the user a detailed view of Content–Type, Content–ID, MIME–Version, To, Date, From, Message–ID, Subject, etc.
Exporting Options in OST Converter

Exporting Options in OST Converter

The Outlook OST Converter Tool provides a variety of OST File export options for the user to choose from. This software includes three distinct export options, which are further subdivided into various other elements. Each option and its components are briefly discussed as follows:

  • Email Files: This preference enables the user to export Outlook OST files to other email files formats such as EML and MBOX.
  • Document Files: This preference enables the user to export the Outlook OST Data files into different Document file formats like PDF, HTML, Text, CSV, vCard, and ICS.
  • Email Services: Apart from converting OST to file formats, this preference enables the user to export the Outlook OST Data files Email Services such as Gmail, Office 365, G suite IMAP independently.
  • Email Client: Thunderbird
2 Options to Add OST File in the Software

2 Options to Add OST File in the Software

OST converter tool allows users to access the OST Data files in the following two ways:

  • Open Configured Outlook OST Files: This preference can be chosen by the user if they want to automatically open the previously configured Offline Data File (OST ) along with other files such as NST, BAK & ZDB which is associated with their Outlook account.
  • Choose Folder / Files: This preference can be adopted by the user if they want to browse or select the OST file that is available in folder format on your PC or desktop.
Extract Options for OST File

Extract Options for OST File

The OST Converter software also has an excellent feature to extract properties from OST files. This feature can convert any type of Outlook OST file into one of the following formats.

  • Email Addresses: This factor allows the user to extract Email Addresses from OST files in Text file (.txt) format.
  • Associated Email and Phone Numbers: This feature of OST Conversion Tool allows the user to extract the previously associated or configured Emails and Phone Numbers in the CSV file format.
  • Attachments: This factor allows the user to extract all attachments from OST files to required place.
Enables Compact View for OST File

Enables Compact View for OST File

4n6 OST file Conversion tool includes an advanced option called "Compact View" that allows you to check only the OST files you want. When you run OST converter tool on your Windows machine, all of the folders will be displayed on the left side. The user can view the desired folder after enabling the option. This feature allows the user to view Offline Storage.ost files in a precise manner. The user can also view a few important options such as Important mails, drafts, Inbox mails, sent mails, Spam, Trash, and so on.

Export Attachments and Save Separately

Export Attachments and Save Separately

This OST converter tool can export all OST file attachments as well as emails. To open and save attachments, the user must right click on them. If your email contains multiple attachments, select the Save All option. If you have several attachments in a single email, you can save them all in one location. The software enables the Extract >> Attachment option, which allows users to export Attachments separately in their original file format. By enabling or disabling this option, users can view or hide the detailed hierarchical folder structure.

Advanced Search Option Available
Advanced Search Option Available

OST converter has an advanced feature that allows the user to easily search for any type of data within the Offline Storage.ost file. This option is available in the application's right top corner, indicated by a search icon. When the user clicks on the icon, he or she will be able to view various search options such as Emails, Calendars, Contacts, Journals, Tasks, and Notes, as well as the option to search them all at once. This software aids in the search for specific search content based on the date the content was created or viewed. As a result, users can only export Searched messages from OST files.

Outlook Installation Not Required
Outlook Installation Not Required

Stand-alone OST converter software is designed to convert unlimited number of OST files without installing Microsoft Outlook on the same machine. This software has been thoroughly tested and produces accurate results. If the user has an inaccessible OST file, this Outlook OST converter tool will recover it. The software is compatible with all versions of the Windows operating system. You can use this advance Outlook OST Conversion App on any version of Windows such as Windows 11, Windows 10, Windows 8.1, Windows 8, and more.

Convert OST Files with All Components
Convert OST Files with All Components

OST converter tool is a complete solution. Data from OST files is exported to a variety of file formats, including all email attributes and properties such as cc, bcc, date, time, inline image, attachment, and so on. It includes a simple graphical user interface that can be used by all types of users, including technical, non-technical, professional, and others.

Wide Range of Compatibility
Wide Range of Compatibility

Outlook OST converter works well with Microsoft 365, Outlook 2019, 2016, 2013, Exchange accounts, IMAP accounts, and Outlook.com accounts. Download the free demo version to test compatibility. It does not impose any size restrictions when converting OST files. You can browse any size OST mailbox in the software environment and complete the conversion successfully.

Software & Hardware

OST Converter Tool - System Requirements

Software Download

Size : 45 MB

Version : 3.2

Trial Limitations

Free OST converter has limitation to convert first 10 emails from each folder of OST file. Buy OST file converter full version for complete data conversion.

System Specifications

Hard Disk Space
100 MB of free hard disk space

1 GB RAM (2 GB is Recommended)

Processor with a speed of 1 GHz (2.4 GHz is recommended)

Supported Editions

  • Microsoft Windows – Windows OS 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019, 2016, 2012 R2, 2008

Electronic Delivery

The delivery of 4n6 OST converter tool is automatic. You will receive an email with the link to download the product and the activation key within a few minutes after the payment has been confirmed.

User Reviews & Industry Recognitions

OST Conversion Tool - Reviews from Experts
CNET Reviews and Award

CNET rated 4n6 OST Converter as the best, highly recommended, and reliable application for exporting OST files to multiple file formats. This powerful software allows users to convert OST files without installing Outlook.

SOftware Informer Reviews and Award

Software Informer team said that this is the only software with numerous unique features to convert OST files and folders to another format. 4n6 OST Converter tool allows you to preview and convert OST file with all its properties.

Working Steps

4n6 OST Converter Software - Screenshots
best software
choose ost files
select export option
add destination path
ost conversion completed

4n6 Software Video

OST Converter Software - Online Video

Conversion FAQ

OST Converter Tool - Clear Your Doubts Here

4 Steps for OST File Conversion:

  • Step-1: Download OST converter software and install.
  • Step-2: Browse Offline Outlook Data File (.ost) Files/Folders
  • Step-3: Click the 'Export' button and Select Export File Format
  • Step-4: Enter a local location and click on the Save option to Start OST Conversion

Yes, this OST converter tool is compatible with Outlook 2021 and all below versions.

Yes, you can extract all the associated email attachments and save in their native file format.

Yes, you can convert your calendar folder to multiple file formats. Simply download OST converter and launch on your system.

Yes, this OST converter software is compatible with all the versions of the Windows operating system.

No, 4n6 OST converter is a stand alone software that does not require any supportive application.

Yes, 4n6 ensures malware free utility with digital signature. 4n6 OST converter is digitally signed and safe to use on any Wondows OS versions.

Client Reviews

OST Converter Tool - Verified Purchase Reviews