Regzion
OST Converter Software

  5 Star Rated by 354+ costumers

Powerful and secure OST Converter Software to Repair and Convert OST to PST with ease. Single tool to effortlessly export OST files to PST, EML, MBOX, Thunderbird and many formats and directly migrate OST to Office 365, Gmail, Yahoo, IMAP Account and more.

  • Recover & Convert any version of Outlook OST and PST files.
  • Easily convert OST emails, contacts, calendar, notes, tasks, journals, and etc.
  • Batch Convert OST to PST files, EML, MBOX, Thunderbird, MSG, Zimbra, HTML, CSV, ICS, vCard, etc.
  • Import OST to Office 365, Gmail (Google Workspace), Yahoo Mail, and IMAP Accounts.
  • No Outlook dependency and open OST file directly and convert.
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* Convert OST to PST files up to 25 items per folder for free with the demo version, try it now.

OST Converter software

windows 10

Features Overview of OST Conversion/Recovrey Software

ost to pst converter
  • Easiest way to Recover/Convert OST files to PST and other multiple formats - EML, EMLX, MSG, HTML, MHTML, PDF, ICS, CSV, vCard, MBOX, and Thunderbird.
  • Recover inaccessible OST file and convert into PST file.
  • Provides the facility to directly open OST file and view Outlook mailbox items.
  • Migrate/Import Outlook mailbox items from OST to Gmail, Yahoo Mail, Office 365, and IMAP accounts.
  • Recover all Outlook items (emails, contacts, calendars, tasks, Journals, etc.) from inaccessible OST files.
  • Available 2 modes to convert OST files- Single File Conversion and Bulk File Conversion.
  • Export email messages of Plain Text, RTF, TXT, and HTML contents from OST to PST files.
  • Export needed older emails from OST to PST files.
  • The tool has 8+ naming conventions for converting OST to EML, MSG, HTML, MHTML, PDF and others.
  • Software 100% preserved the email status (Read and Unread status) of email messages.
  • Properly maintains original folder hierarchy during OST to PST Conversion.
  • Smart mail filtering based on date and export emails from OST of chosen dates only.
  • Supporting OST file of all MS Outlook editions- 2021, 2019, 2016, 2013, 2010, 2007, 2003, 2000, and older.
  • Working in every Windows edition-based PC- Win 11, 10, 8.1, 8, 7, XP, Vista, and others.
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Presenting free demo of OST to PST Tool for testing all software functions for free.

Award-winning Software for Instant OST File Conversion

Regzion OST to PST Converter software

The easiest and most reliable solution for resolving all OST file-related issues, this all-in-one software helps users regain access to their Outlook emails effortlessly.

It not only converts OST files to PST format but also supports direct OST migration to Google Workspace, Office 365, and IMAP server accounts. With its powerful recovery engine, the tool can recover and export OST mailbox items even if they are inaccessible or damaged.

Outlook OST file conversion
ost converter

Fastest Convert OST Files

With this single software, users able to convert OST files into 12+ file formats, like- PST, EML, EMLX, MSG, HTML, MHTML, MBOX, vCard, ICS, TGZ (Zimbra), Thunderbird.

repir corrupt ost files

Repair Outlook OST files

Repair OST files and get back access to your Outlook Mailbox data from inaccessible OST files. Recover all Outlook OST mailbox items like- Email, contact, calendar, etc.

upload ost file to cloud mail

Import OST file to Cloud

Migrate/ Import Outlook mailbox items from OST files to any cloud or web email services directly. Move OST files to Gmail, Yahoo Mail, Office365, Outlook.com, IMAP mailboxes, & more.

open viewer/opener

Open/View OST Files

Now, you can open OST files without the MS Outlook application. Easily open Offline OST files (corrupt/ inaccessible) & view all its stored inner data items.

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Advanced Features of OST Converter Software

bulk convert OST files

Batch OST to PST File Converter

Converting one OST file at a time or converting multiple OST files at once is possible with the bulk OST conversion option. Get the power to load multiple OST files and convert them all at one go with the bulk OST conversion feature.

ost convert to different formats

OST Convert to 12+ formats

Be able to convert OST files with Outlook items into over 12 different file formats through this software. Perform OST Conversion to Single PST (multiple OST save in single PST), Separate PST (for every OST file), MBOX, vCard, ICS, MSG, EML, EMLX, Zimbra (TGZ), HTML, MHTML, CSV, & Thunderbird.

error-less conversion

Faultless OST file Conversion

Accomplish each conversion job flawlessly by the software every time. Smooth OST conversion without a single modifications or loss to OST file's internal data. Maintain originality of every element of OST file to PST and save to new files in their original format.

convert corrupt ost files

Convert Inaccessible OST files

Get the power to convert OST files of all types including corrupt or inaccessible OST files. With no issues, convert healthy OST files as well as OST files that are inaccessible/ orphaned or showing corruption errors in Outlook.

export all outlook items from ost

Convert OST all Outlook items

Easily Convert OST to PST file with all Outlook mailbox items including- Emails, Contacts, Calendar, Tasks, Notes, and other mailbox items. Safely export these items from OST files and save them to new available convertible file types.

free ost conversion

Free OST to PST Converter Trial

Without spending a single penny, try this software for OST to PST file conversion. Before purchase of paid license, download and try free demo to check software features and working by converting OST file with up to 25 items (per folder) to available export option.

convert ost with chosen folders

Convert OST Selective folders

Quickly convert OST files with entire or chosen folders containing Outlook items. Load OST files with all mailbox folders into the software and get the ability to select only required folder from them. Select needed folders to convert OST with only them.

ost to cloud migration

Migrate OST to Cloud Email

Smartly move Outlook mailbox items from OST files to cloud or web based email platforms. Move or Import OST mailbox to Office365, Gmail (Google Workspace), Yahoo Mail, Outlook.com, and IMAP based web emailing platforms.

convert ost with emails of chosen dates

Email Filtering by Date-Range

Filter emails from OST files based on their date. Choose a start and end date between which you want to export emails from OST file. This enables users to speed up the conversion process and prevent unwanted emails from exporting.

smart graphical interface

Smart & User-Friendly Interface

The interface of this software is clean and easy to understand, it can be operated by anyone even without any prior experience. The user just needs to apply some simple click steps and it will convert OST files perfectly and easily for the users.

workable on all windows edition

Windows O/S Compatibility

This software is made to help users working on the Windows operating system. Users can easily use this software for OST to PST conversion on any version of Windows O/S including- Win 11, 10, 8.1, 8, 7, Vista, XP, and older (both 32-bit and 64-bit).

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Single software for Different tasks with Outlook OST files

Multi-featured OST converter software for the task of repairing OST, recovering Outlook mailbox, converting OST files, and quick OST to cloud mail migration.

Recover Outlook Mailbox items from Inaccessible OST files

export outlook ost emails

Emails

export outlook ost contacts

Contact

export outlook ost calendar

Calendar

export outlook ost tasks

Tasks

export outlook ost notes

Notes

Perform OST file conversion into 12 different conversion formats

outlook ost to pst

Outlook PST

outlook ost to msg

Outlook MSG

convert ost to eml

EML

convert ost to emlx

EMLX

convert ost to html

HTML

convert ost to mht

MHTML

convert ost to mbox

MBOX

convert ost to tgz file of zimbra desktop

Zimbra (TGZ)

convert ost contacts to vcard/vcf

vCard (VCF)

convert ost calendar to ics/icalendar

ICS

convert ost contacts to csv

CSV

import ost to thunderbird files

Thunderbird

Directly upload Outlook mailbox items from OST files to Cloud email platform.

ost to office365

Office365

ost to Gmail/Google Workspace

Gmail

ost to Yahoo Mail

Yahoo Mail

ost to outlook.com

Outlook.com

Iost to MAP Server Accounts

IMAP

OST Converter Comparison - Free vs Paid Version

Trial Version ( Free) Paid Version ($29)
Convert OST to all available formats ✓ ✓
OST Conversion with chosen folders ✓ ✓
Open OST files & Preview Outlook items ✓ ✓
Exporting OST Emails of chosen dates ✓ ✓
Unlimited Outlook OST File Conversion × ✓
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What customers say about

Regzion OST to PST Converter

⭐ 4.9/5 based on 473 reviews

Excellent 96%
Good 3%
Average 1%
Below Average 0%
Poor 0%

"I am very happy with this OST converter! It easily converted my OST files with all my emails and contacts in just a few minutes. The interface is user-friendly, it made the process of OST conversion very simple for me. I highly recommend it to everyone who needs to convert their OST files!"

Phillip Reilly

Norway.

⭐⭐⭐⭐⭐

"This OST converter exceeded my expectations! I had a large file to convert, and it handled it with ease. The output quality was fantastic, keeping all my data completely safe. Also, the customer support team was very helpful. Definitely worth the investment!"

Jose Anderson

Netherlands

⭐⭐⭐⭐⭐

"I tried several OST converters before finding this gem, and I'm so glad I found it! It's fast, reliable, and packed with smart features. I especially like the batch conversion option, which saved me a lot of time. If you need to convert OST files, look no further - this is the one!"

Patricia Malone

Australia

⭐⭐⭐⭐⭐

Write a review

Convert OST File with 3 Simple Steps

Download OST Converter exe file, then install, & launch it to your windows based computer.

Choose a mode of adding OST file (Single or Bulk), and load OST files into the software.

Choose a Conversion format, apply relevent settings and convert OST files.

Software Specification

software details
Software Info
Regzion OST Converter
Version:    2.0
Available License:    Personal, Corporate, & Technician
Version Support
Email client:     Microsoft Outlook
Version:     2021/ 2019/ 2016/ 2013/ 2010/ 2007/ 2003/ 2000 or older
File type:     OST / PST and NST files
System Requirements
Processor:   Intel® Pentium Class (x86, x64) or equivalent
Hard Disk Space:   50 MB of free hard disk space
RAM:   Minimum 512 MB is required
Windows O/S:   Win 11/ 10/ 8.1/ 8/ 7/ XP/ Vista and older editions.
Software Delivery
( License Key )
Electronic:   YES
Mode:   Delivery by E-mail
Weekends Delivery:   YES

Frequently Asked Questions

Apply these simple steps to convert Outlook OST files to your desired conversion format: -

  • Download OST Converter for Windows and launch it to your machine.
  • Press Select OST button & choose Single or Bulk file conversion mode.
  • Import OST file with your chosen file-adding mode and load OST file.
  • Open OST view all mailbox items choose the required folders.
  • Click on Save OST and select a conversion format- PST, MBOX, EML or others.
  • Select and use mail filter, naming convention and other available options.
  • Press the Convert button and begin the OST file conversion process.
OST Converter

While converting OST files through this software, it is not necessary to have MS Outlook on the user's machine. Even without Outlook, it will convert the OST file and give the best result.

Yes, all types of OST files users can convert with this tool, including orphaned and corrupt OST files those are inaccessible in Outlook application.

Yes, it provides different file types in which users can save each Outlook item separately (one item in each file). Easily save individual email in files- EML, EMLX, HTML, MHTML, and MSG.

Not directly, but it is possible with the Split PST option. Convert large OST and break it into separate small-sized PST files with PST splitting function.

Yes, users can easily export contacts from Outlook OST files to files like PST, MSG, vCard, and CSV. Users can choose the vCard format to save the contacts specifically.

The software provides different formats but the best format for storing calendar items is ICS.

Yes, OST files generated from all new to old versions of Outlook will work in this software. Easily convert OST file of Outlook 2021, 2019, 2016, 2013, 2010, 2007, 2003, 2000, and older.

Free demo version is available for testing the software before purchasing it. With this demo version, users can analyze how this software works. Moreover, it allows users to convert OST files with 25 items from each of its selected folders for free.

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