BitRecover®
OST Converter Wizard

Professional OST Batch Conversion with Flexible File Naming OST Converter Wizard

  • Ability to export large OST files in bulk regardless of the number of files or folders.
  • Converts OST files with complex hierarchy while keeping the original data structure intact.
  • Exports OST data with email headers, timestamps, and metadata with 100% accuracy.
  • Allows selective conversion of OST data based on date ranges, folders, and other attributes.

Download OST Converter Tool

Screens

Video

Guide

How it Works

How to Convert OST Files in Batch

Users often need to convert OST files to accessible formats for data retrieval, recovery, or backup purposes, or move them to another email client. BitRecover Outlook OST File Converter makes it easy to fulfill this purpose using steps as below:

  1. Download the OST Mailbox Wizard and run it on your PC.
  2. Next, choose “Select Files” or “Select Folders” you need to convert.
  3. Check and Uncheck the required sub-folders.
  4. Select the Saving Option in which you need to convert your files.
  5. Lastly, apply the filters and click "Convert" button.
multiple Saving Options

Versatile Conversion Mode

Convert OST Files into 39 Unique File Formats

The OST mailbox converter enables users to convert Outlook OST files into 39 formats, such as Convert OST to CSV, EML, MSG, EMLX, PDF, CSV, vCard, TXT, HTML, XPS, RTF, DOCX, ICS, TIFF, BMP, JIF, JPEG, PNG, OLM, etc.

Also, after a successful conversion, users may migrate their OST files to the web and desktop-based email clients including Gmail, G Suite, Office 365, Yahoo Mail, Zimbra, Thunderbird, Maildir, Lotus Notes, Entourage, Outlook.com, Exchange Server, IBM, Amazon Workmail, and IMAP services.

Advanced Customization Settings

Advanced Data Conversion

OST File Converter with Multiple Advanced Filters

The software uses efficient algorithms to process OST files accurately and is easy to use for both technical and non-technical users.

The OST exporter provides advanced filtering options that allows users to sort and convert specific data by Date Range, To, From, Subject, and other criteria.

Moreover, if anyone wants to exclude unwanted or empty folders, then they can easily enable the “Exclude Folders” and “Exclude Empty Folders” options. Also, users can select the required data from the same, which they want to convert like Mails, Calendars and contacts etc.

advance preview feature

OST Conversion with Preview

Selective OST Conversion with Advanced Preview Feature

This Outlook OST file converter efficiently exports selected data without requiring Outlook installation. The utility ensures no folder hierarchy or internal data is altered or damaged during the selection process. For example, once the software scans your OST file, you can use the checkboxes to pick specific folders like Inbox or Sent and skip the rest.

Engineered for all user requirements, it maintains total data integrity throughout the process. This powerful utility is free from spyware, viruses, or ads. It converts folders and subfolders regardless of technical expertise—no experience is needed to transform OST files into your desired format.

Converts All OST Data Including:

emails

Emails

contacts

Contacts

calendars

Calendars

tasks

Tasks

notes

Notes

journals

Journals

Key Features

Distinctive Functionality of OST Converter Tool

add data

Dual Modes to Add OST Files

The OST data converter tool enables you to export numerous OST files in a single batch operation to a selected file format. Additionally, it has a variety of options for adding OST files. You can choose the Select Files option if you need to convert OST files individually. To convert an entire folder, please choose the Select Folders option. Also, this advanced tool can automatically load the data from the configured Outlook profile.

contacts / calendars

Export OST File Contacts / Calendars

BitRecover OST data Converter is a well-suited product to extract contacts from Outlook OST files to vCard VCF (Virtual Contacts Format) and CSV (Comma-separated Values) format. The tool also allows you to convert OST calendars to ICS format. and vCard, CSV, and ICS are standard file formats that can be easily imported into multiple email clients/ email services/ mobile devices/ tablets/ computers, etc.

convert damaged

Convert Damaged OST Files in Bulk

OST file Converter provides the "Recovery Mode" option for making the task easy if users want to repair damaged OST files and convert them in bulk. The Recovery Mode option helps convert corrupted OST files. Using the software, you can choose multiple OST files or folders from your computer. The OST file converter tool allows you to export multiple OST files at once with data accuracy.

convert with components

Convert OST Files with Components

BitRecover OST mailbox converter software is fully capable to export data from OST files to a wide range of file formats including all email attributes such as CC, BCC, Date, Time, inline image, attachment, hyperlink, email folder, contacts, calendar, journal, tasks, junk email, notes, deleted items, text formatting, Internet header, signature, subject, etc.

graphical interface

User-Friendly Graphical Interface

The welcome (first starting) screen of this OST file exporter software provides detailed information about the working process of this software. The OST file converter tool comes with a simple to use "GUI (graphical user interface)" so that it can be easily operated by both technical as well as non-technical users. Now, one can easily export OST files without facing hassle.

export large sized

Export Large Sized OST Files

The OST File Converter is designed to convert and transfer unlimited OST files without any file size limitation. We have tested this software successfully with various sample OST file sizes of 500 MB, 1 GB, and 2 GB up to 1 TB OST files. This feature is most helpful for corporate users having oversize OST files to convert.

convert selective

Convert Selective OST Folders

Another beneficial feature is the ability to convert only selected folders from OST files, ensuring precise results. After loading the OST files into the software, it shows you all the folders and subfolders along with the check boxes to select desired ones. It helps you to select only particular folders and proceed with the process. The OST mailbox converter wizard offers to open OST file without Outlook on its panel, from here users can choose only desired folders to export OST files/folders.

naming options

Different File Naming Options

OST File Converter provides multiple file naming options to convert OST files so that users can manage their single emails or converted documents by original file name, date, time, subject, from, and auto-increment. This option is important to manage emails or documents according to users' or organization's requirements. This feature is most helpful for data management.

convert encrypted

Convert Encrypted OST Files

This advanced utility empowers users to convert encrypted OST files without requiring the original password. It maintains your privacy by utilizing secure protocols, ensuring sensitive data remains untouched during the transition. Engineered for professional standards, it guarantees total data integrity and a risk-free conversion process for users of all technical backgrounds.

scan ost files

Scan OST Files Before Conversion

The OST Exporter offers an integrated scanning feature for users to extract data from inaccessible OST files. This tool not only recovers important data from inaccessible OST files but also converts it into a more convenient and healthy format, ensuring your important information is preserved.

exchange supported

Exchange & IMAP Server Supported

The tool is capable of working with OST files of Microsoft Outlook 2021, 2019, 2016, 2013, 2010, 2007, etc., and Exchange Server 2019, 2016, 2013, 2010, 2007, 2003 (SP1, SP2, SP3), etc. It also supports IMAP Server OST (Offline Storage Table) files.

no require outlook

No Outlook Installation Required

OST Exporter is a standalone software that does not require Microsoft Outlook or Exchange Server configuration for conversion. It requires only OST files to export emails in multiple generic file formats.

compatible with all ost

Compatible With All OST File Types

The OST conversion software is compatible with Encrypted, Compressed Configured, and Orphaned OST files and allows exporting them in multiple email/document/email client/email server, etc. formats with the fastest speed.

automatically load

Load OST Files Automatically

If MS Outlook is configured on your computer, then this application will load OST files automatically from the default storage location. Users can also choose OST files manually for adding in the software panel by clicking on the "Select Files" or "Select Folders" options.

log report

Generates Log Report

After the files are converted successfully, the BitRecover OST file converter tool automatically creates a detailed log report. This log report contains important information about the converted data status, saving type, destination path, source path and more.

separate outlook files

Separate Outlook Files Per User

The BitRecover OST export tool generates a separate Outlook file for each user mailbox. This tool particularly benefits organizations with multiple employee accounts that require conversion, as it efficiently creates individual Outlook files for each employee, saving both time and effort.

Step-by-Step Guide

How to Use BitRecover OST Converter Tool?

Run BitRecover OST Converter

Run OST Converter Software

First, click on the download button to install the tool and follow on-screen instructions to install the OST Export Tool on your PC.

input OST file

Input OST File(s)

This versatile utility offers dual modes to load OST mailbox data by automatically detecting configured Outlook profiles on the PC or allowing you to manually browse for specific files and folders.

choose saving options

Select Saving Options

After that, choose saving options. The OST conversion tool provides over 39 saving or data conversion options. Choose the one that suits your requirements.

ost conversion process

Start Conversion Process

Finally, click on the convert button to start the OST file conversion process. After completion of the process, the tool will automatically display a dialog box confirming the same.

Detailed Guide  ➟

BitRecover OST File Converter - Key Distinctive Features

The updated version of Outlook OST Converter Tool is fully loaded with several advanced features which make it unique to convert OST files without the loss of data. It is digitally-signed by DigiCert, Inc. (US) using SHA256 Digest Algorithm and RSA Digest Encryption that makes the file conversion process safe, preserving its formatting and properties without any alteration. BitRecover OST Converter Software converts Encrypted, Compressible, Exchange Server, IMAP, and Outlook OST (Offline Storage Table) files successfully without showing any error message.

Batch Conversion

100% Secure

Convert password-protected OST files while ensuring total privacy.

Data Preservation

Flexible Loading

Select individual files or entire folders for processing.

Conversion Log Reports

Universal Support

Compatible with all Outlook versions and file formats.

ost converter tool

Why BitRecover OST Converter Tool?

The Outlook OST File Export software provides a very sophisticated functionality to users looking to choose Outlook as the output format.

Through this, users can easily Split PST Files into 2 GB, 5 GB, 10 GB, and 20 GB, making it manageable for different storage needs. And you can create a separate file for each OST file so that data organization remains clear and accessible.

And while choosing a saving platform such as Office 365, Yahoo Mail, Gmail, G Suite, etc. you may also select your desired language such as English, Spanish, French, German, Italian, Dutch, Finnish, etc.

Real-world Application Scenarios

Impactful Use Cases of OST Data Conversion

home users

Individual/Home Users

Migrate standalone OST files into print-friendly formats to preserve personal communications for years to come. This tool keeps high-resolution photos and original layouts intact, making your memories easy to share with future generations without needing Outlook.

it professionals

IT Professionals

Large-scale OST data can be consolidated into organized formats, maintaining the original folder structure for technical correspondence. By using custom file-naming conventions, professionals can ensure that migrated data remains structured and easy to retrieve during internal audits.

business users

Business Users

Transform critical corporate communications into portable formats to keep business history accessible on any device. It preserves attachments and rich-text formatting, ensuring records are searchable and professional during internal reviews or audits.

researchers

Students & Researchers

Convert scholarly correspondence into standardized formats for better primary source organization during research projects. The utility maintains message headers and timestamps, making citations academically easy to reference in your final bibliography.

forensic investigation

Forensic Investigation

Individual Outlook files can be converted into universally accepted formats, making it ideal for legal professionals preparing discovery evidence. The tool preserves critical metadata, including message headers, internet traces, and original timestamps, to ensure records remain legally compliant and tamper-proof.

legal and compliance

Legal & Compliance

Internal company communications can be transformed into static, non-editable formats for long-term regulatory compliance. This utility preserves the exact message layout, including attachments and timestamps, so your organizational records are securely archived and easily searchable during financial audits.

System Requirements

OST Converter Minimum System Specifications

ost converter tool
Product Name: BitRecover OST Converter Wizard
Version: 26.2
Size: 48 MB
License: Standard, Pro & Migration

Trial Limitations

Download the OST Data Converter trial version to test and evaluate the software and its features. Please note that its free version of the Windows & Mac OS is limited to converting only the first 25 OST files from each folder to the selected saving option.

System Specifications

Hard Disk Space
200 MB of free hard disk space

RAM
4 GB (Recommended)

Processor
Intel® Pentium 2.4 GHz (Recommended)

Supported Editions

  • Microsoft Windows – Windows OS 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2022, 2019, 2016, 2012 R2, 2008, etc.
  • Mac OS – macOS 26 (Tahoe), macOS 15 (Sequoia), macOS 14 (Sonoma), macOS 13 (Ventura), macOS 12 (Monterey), macOS 11 (Big Sur), mac OS 10.15 (Catalina), macOS 10.14 (Mojave), macOS 10.13 (High Sierra), macOS 10.12 (Sierra), OS X 10.11(El Capitan), OS X 10.10 (Yosemite), OS X 10.9 (Mavericks), OS X 10.8 (Mountain Lion), etc.
  • OST Files – Exported from Microsoft Outlook 2021, 2019, 2016, 2013, 2010, 2007, 2003, 2002, 98, and 97 in both ANSI and Unicode formats.

Electronic Delivery

We'll automatically send you an email containing a download link and activation keys once your payment is confirmed. Then, you can easily activate the product to start using it.

OST Converter Tool - Comparison

Feature Comparison of OST Mailbox Converter - Free and Full Version
  •  
  • Load Mailbox Folders
  • Multiple Saving Options
  • File Naming Options
  • Windows 11 & All Previous Windows OS
  • Bulk Conversion
  • 24*7 Tech Support
  • Price
  • Free
  • First 25 Items
  • Basic
  • $0
  • Download
  • Most Popular
    Full Version
  • Unlimited Items
  • Extended
  • $39
  • Buy

Frequently Asked Queries (FAQs)

Commonly Asked Q&A Regarding OST File Converter

5 Easiest Steps for using the OST Converter Software

  • Step-1: Download the BitRecover OST export tool and launch it on your system.
  • Step-2: Now upload the required files/folders.
  • Step-3: Check/uncheck the needed data from the panel.
  • Step-4: Choose the saving option as per your need.
  • Step-5: Apply the filters and hit the “Convert” icon.

You can simply check for the synchronization of your OST file in the following steps:

  • Right-click on the offline folder to view its properties.
  • Open the Synchronization tab and read the synchronization info.

If the “#items” value is the same for the server folder and Outlook offline folder, then your OST is synchronized with Exchange Server. Otherwise, if values do not correspond, your OST is not synchronized with the Exchange Server.

You should go for the following approaches to manually fix crashed Outlook account:

Approach 1: Permanently Kill Outlook Ongoing Processes

Firstly, kill all the running processes for the Outlook application by the following steps:

  1. Browse Task Manager by pressing CTRL+ ALT + Delete.
  2. Click on the “Processes” option
  3. Choose all the running processes related to”Outlook”, “communicator”, “Lync”, “ucmapi”
  4. Click on the End Task option to kill all Outlook processes.

Approach 2: Disable Cache Mode

The Exchange cached mode might be enabled on your system, which may have crashed the application. Disable the cached mode in the following way:

  1. Exit the Outlook application and open the Control Panel.
  2. Browse Mail > Email Accounts > Email options.
  3. Select the account for which the error is generated.
  4. Click on the Change option to view settings.
  5. Unmark the Use Cached Exchanged Mode option.
  6. Click on Next and Finish to save the changes made.

Now, start the Outlook application to access your account without any error.

The Offline OST file can be easily synchronized with the server by making small changes in the settings. Once the changes are made your OST will get automatically synchronized and will make changes to the server upon establishment of the connection.

  1. Under Outlook account, browse Tools > Options > Mail Setup
  2. Click on Send/Receive option.
  3. Check mark Send immediately when connected option.
  4. Under the Send/Receive dialog box, choose to Perform an automatic send/receive.
  5. Click on Save to make the changes made.

There are two main situations to create an OST file:

  • In the latest MS Outlook editions if any user configures MS Outlook with IMAP protocol then it creates *.OST file to save data
  • If MS Outlook is configured with POP3 protocol (POST Office Protocol3) then it will create an Outlook data file (PST) to save data but if users connect POP3 configure MS Outlook with Exchange server then it creates an extra *.OST file also.

Microsoft Outlook provides a high level of security for OST files because most corporate users prefer it. But sometimes if MS Outlook got corrupted OST files can’t be accessed again in Microsoft Outlook. A lot of users want to convert their import OST to MS Outlook and other email clients so OST file conversion is important.

OST Converter Tool comes with 3 types of different licenses as follows

  1. Standard License – It is suitable for personal use; it can be installed on 2 computers and it gives 15 saving options.
  2. Pro License – It is suitable for business use; it can be installed on 5 computers and it gives 20 saving options.
  3. Migration License – It is suitable for migration projects; it can be installed on 10 computers and it gives 39 saving options.

Yes! It is well suitable software to convert OST file that is not connected to an MS Exchange server.

Yes, BitRecover OST exporter tool supports NST file conversion. The software supports .nst files created by Outlook Connector for IBM Lotus Domino, which is an add-in for Microsoft Outlook. It also supports the conversion of Outlook 2016 .nst files, such as Outlook.nst and Office 365 .nst files.

Yes, OST Converter Software supports the export of large OST files easily.

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