BitVare For OST

OST Converter for Mac, Windows

Export OST Files to 15+ File Formats - PST, OLM, PDF, Gmail, O365, & more.

  • OST Converter supports single & batch conversion of OST files.
  • Export OLM files with all emails, contacts, tasks, notes, calendars, and journals.
  • Convert OST files to PST, PDF, MSG, MBOX, EML, HTML, TXT, ICS, XPS, etc.
  • Export OST file to cloud email services i.e. O365, Gmail, IMAP, Exchange Server, etc.
  • View OST data in multiple styles i.e. content, message header and hex view.
  • Maintains email elements and folder structure during the OST files conversion.
  • Import Outlook OST file to Thunderbird directly.
  • Easily export large-sized OST files without any limitations.
  • Advanced filters to transfer required OST data items.
  • Instantly move Outlook OST file without Outlook installation.
  • OST Converter supports all editions of Outlook & Windows OS.
  • The OST Converter Free demo can convert only 10 items/folder free of cost.

New & Advanced Options

Multiple Preview, Extract & Export OST Files

Supports Multiple File Formats

Windows & Mac OST Converter is developed using advanced algorithms which enable users to export files into various file formats i.e. PST to PDF, EML, HTML, RTF, NSF, and so on without any modification.

Bulk Mode Option

The ultimate Windows & Mac OST Converter application provides the bulk mode function to move limitless OST emails into any file format at once. And also users can select the bulk option to save more time and extra effort.

Conversion in Cloud Apps

The OST Converter provides loads of generally used output file types to save the OST database that also includes cloud servers like Office 365, Exchange Server, G-Suite, Hosted Exchange Server, Yahoo Mail,, etc.

Preview of OST Mailbox Items

With its preview facility of the BitVare's Windows and Mac OST Converter, the users can preview all OST folder items before migration to other format. Users can also confirm the accuracy with different modes, including content, message, hex, and raw mode.

OST Converter

Migration of OST in Different File Extensions

OST converter for Mac and Windows tool has facilities to transfer the OST data into various file extensions. It also delivers output options to help users convert email files. OST tool is a perfect conversion software that supports the migration of complete OST data to different output formats such as:

  • MBOX
  • PST, MSG
  • RTF

Direct Import OST Emails to Popular Cloud Apps

The Windows, Mac OST Converter software is one of the best application that supports the feature of converting OST files into any cloud app along with attachments. The OST Converter possesses direct functionality to export OST mailbox data into popular cloud apps such as

  • Gmail
  • Office 365
  • Live Exchange Server
  • IMAP Server
  • G-Suite
  • Exchange Server (On-premise)
Import OST Files to Webapps OST converter for Mac & Windows
backup OST files

Batch Import OST Files at Minimal Time

The OST Converter is a dependable and trouble-free solution that allows you to convert bulk OST files into any supported file format in a one-time process. It gives dual options - Add Files and Add Folders options. With the help of the options, a user can select those OST files and folders which he/she want to export into multiple output options in a single time processing.

With Advance View to Check Preview of Loaded OST Files

The advanced view option of the OST Converter is the most advanced feature for this process. After the process of OST data, the tool provides multiple view options. It helps users check all loaded OST files in some advanced previewing modes.

  • Content Mode – OST files in text formatting with exact formatting.
  • Content Mode – OST files in complete properties with ID, Description, & Value .
  • Message Mode – Includes mail header in HTML formatting.
  • Hex Mode – Shows OST data preview in hexadecimal value.
  • Raw Mode – Preview OST data in HTML format.
View OST File in multiple modes

Different Preview Options

Read OST files in Multiple Modes

Content & Properties

In Content mode, you can view your email data with the exact formatting. In Properties, you can view OST data with complete properties of data.

Message Header

Whenever there is a need arise for checking the email header details, then this option is perfect with Complete header details of mails & other items.

Hex View

In the hex view, you will get the preview of your email files in bytes that includes the OST file characteristics.

Raw Message

If you need to view your email data file in HTML format, so you can opt this mode of the preview.

More Functions & Features

Features of Windows & Mac OST Converter

Save OST Data to Desktop with Different Formats

The BitVare for OST is the best Windows & Mac OST Converter to move OST data to the desktop in multiple file formats like PDF, PST, MBOX, MSG, EML, EMLX, HTML, etc. The software is the safest method to perform this process with complete OST file data.

OST Export with All Properties and Attachments

Convert OST files with all types of data of files including email header data (To, From, Cc, Bcc, Subject, Sent, Received, etc.), hyperlinks, message body, images, and so on. It can easily process large size OST files that may include attachments.

Selective OST Data Conversion

OST Converter provides multiple options to save OST files with selective email files through a single processing way. This OST Converter for Mac, Windows allows users to follow the step-by-step process to convert OST data with only required OST files and provides options to save all files to the required destination location.

Email Conversion with a Single Software

This utility is the secured solution to convert OST data. There is no need to follow the steps of other software as the tool is the independent solution to convert all types of OST files instantly with the same structure of files.

Maintains Properties and Elements

Properties and elements of email files are the most important information of email data. This utility is capable to manage all types of OST data with the same structure and formatting of every email. With the help of this feature, it is easy to read all data with a single view.

Suitable for all Outlook Versions

The OST Converter software is programmed in a way that a user can download and use the application on any edition of Windows OS. The OST File Converter software is compatible with both 64bit and 32bit Windows Operating systems including Windows 11, 10, 8.1, 8, 7, XP, etc.

Interactive Software Interface

The interface of OST Converter software is so easy and reliable tool. It is easy to use and understand for all types of users i.e. non-technical and technical users. One can effortlessly use this software for exporting offline .ost files data folder to desired file format locally.

Bulk Export OST Data Files

Windows, Mac OST Converter comes with safe batch functionality for all the users that support to perform multiple OST file conversion at once round of process only. This option saves the users time and energy and quickly migrates bundles of OST data files and folders into selected file formats without any data loss.

Apply Filtration Options

OST File Converter software contains different filters to export the necessary details of the OST mailbox. The features can be useful by selecting the fields that contain the option of subject, date-range, to, and from.

Instantly Move OST to Cloud Apps

With OST Converter software, one can easily convert your entire mailbox and other related OST data to Gmail, Office 365, Yahoo Mail, IMAP,, Exchange Server, and many more cloud accounts using IMAP settings. The tool has the flexibility of moving all the mailboxes to cloud/local storage without any limitations.

Download Strong OST Converter Tool

*The Free BitVare for OST trial edition will export 10-25 Messages/Folder.


System Requirements for BitVare's OST Converter for Mac , Windows

System Requirements

Processor 1 GHz Processor(Recommended - 2.4 GHz)

Operating System Windows 11(32/64 bit) & All Below Versions.

Memory 512 MB Minimum (1 GB recommended)

Hard Disk 100 MB of free space

Software Delivery

Electronic Yes

License & Version

Personal License Activation 2 PC / Laptop

Business License Activation For 10 PC / Laptop

Enterprise License Activation For Unlimited PC

Version 1.0

Interface Available

Language SupportedEnglish

Installation & Un-installation:

Working Guide

How to Convert OST Files in Few Steps

01 Download the BitVare for OST Tool

launch it and select OST file by provided two options

open OST converter

After loading OST files data, check and go with export option. select any saving option according to your need.

Choose Saving Option

After completion the process, it displays a successful note. click on OK button

OST conversion Complete

How to Convert OST File on Mac or Windows

Click on the button and know complete working process of the OST migration in detail.

Customer Review

Know What Verified Clients' are Saying About BitVare for OST

I was looking for a medium to export OST files to office 365 account. After lots of research, I found BitVare for OST tool the best way to convert batch OST files to Office 365 account for Mac. I am happy with the fast service and quality results. I must recommend this tool for save and secure OST file conversion.

Blaine M. McHaney

The best part of BitVare for OST tool is the advanced search options. It helps me out in converting bulk of OST data in PST format in lesser time. The advanced search provides wide category of options for filtering the migration process. You should try the tool at least once for OST file migration.


I am working in an organisation where I have to use many conversion tools on daily basis. Believe me! BitVare for OST is the best conversion toolkit I have ever used. The software exactly does what it claims. The OST file conversion experience with this tool is less exhausting as compared to other tools I used before.

Editor, PCMag



BitVare for OST tool provides preview in four different ways i.e. Content View, Message Header View, Hex View, and Raw Message View.

Yes, the software is capable of exporting OST files along with all the attached files to any supported format.

Yes, the software support to extract particular category of database from the OST files. For this, just click on the Extract button in the toolbar and choose phone number from the given list.

Yes, you can use the software on Mac edition Catalina. Not just Catalina but you can run the software on all Mac editions such as Monterey, Big Sur, El Capitan, High Sierra, Sierra, Mojave, Yosemite, etc.

No, BitVare for OST is the powerful software that support to export OST files of any size to any email format without any limitation.

Using the search icon given on the top-right corner, users can filter the OST files selection by using Name, Subject, From/To, CC, Content, Date, From, and many others.

Yes, this can be done with the help of DEMO edition of BitVare for OST. Using the trial edition, you can use the software free of cost by converting first 10 OST files to any desirable format.

Free Trial Version that meet your requirements

Download the free trial edition to use & check its properties.

Mac OST Converter  Windows OST Converter
*Download BitVare's OST Converter Free version to import first 10 files into desired saving option.