OST To PST Converter

Excellent (4.9/5) 4219 Reviews

Restore Orphaned Mailboxes from OST to PST Files and various other file formats. Migrate OST to Office 365, Exchange Server, Gmail and various other web-based email clients .

How It Works?

Software Compatible with

  Outlook 2019  |    Windows 10

Download Best Tool to convert OST to PST for Outlook & Office 365

  • Restore OST Mailbox Items → Email, Contacts, Calendar, Attachments & others.
  • Save Various File Formats → PST / EML / MBOX / PDF/ MSG/ EMLX/ TEXT/ NSF/ OLM Formats
  • Export Contacts and Calendar → Save it into vCard and vCal respectively.
  • Split OST By Size → Split Large-Sized OST File by Small File
  • Batch Conversion → Convert Multiple OST files to PST files in a single batch
  • Preview OST Items → Tool shows preview OST Emails with attachments.
  • Restore To Mail Servers → Migrate OST to Office 365, Exchange Server, Gmail & G Suite Web Mail Servers, Email Servers.
  • Supports OST → Software works on IMAP & Hotmail OST File
  • Filter Options → Select Emails by Date Filters & Naming Conversion
  • Deleted Data Restoration → Restore Deleted Exchange Mailboxes from OST
  • Encrypted OST file → Recover Orphaned, Password-protected, Encrypted OST and Decrypt & Remove S/MIME & OpenPGP encryption from Outlook OST

* Demo Version allows user to Preview OST data & allow to convert only 30 items each folder

Expert Review


OST To PST software is the ultimate solution to convert Offline OST mailbox data to Outlook PST file format. This new version of software has many update and new features which allow user to recover multiple inaccessible OST file & export all items from OST to various file format.


OST to PST converter has worked wonders for conversion data of Offline OST file to PST after successfully, then import converted PST data to Outlook 2016. This application I use and export to.


Features of OST To PST Converter Software

Convert OST to PST & other file formats

Free OST To PST recovery software can convert corrupt OST file into the selected file

  • Exporting in Mulptiple File Formats - After loading OST file data, user can export OST file into a different file format such as PST, EML, MSG, MBOX, EMLX, TGZ, PDF, OLM, NSF
  • Saving Contacts and Calendar Options Save Contacts to vCard and Calendar to ICS respectively
Supports Batch Conversion Feature

OST Converter is an advanced application that allows you to export multiple OST mailbox items into different file formats in a single go.

  • Add Folder - Select a particular folder/drive which contains OST files for loading multiple OST files in one go. Using this method, users can convert multiple OST files to Outlook PST files and other formats as well.
Migrate to Office 365 & Exchange Server

OST to PST Converter tool allows you to migrate complete data from OST to Office 365 & Exchange Server Admin/User Account without any loss data.

By providing the credential details; Login Id & Password of the respective Admin/User account and proceed for migration.

Upload OST to Gmail & G Suite

OST To PST converter software has advanced features that can easily migrate all Outlook/Exchange/IMAP offline .ost data to Gmail account as well as G Suite (Google Apps) account.

Split PST and Message Filtering Options
  • Split PST Option feature within the software that helps split heavy size OST file into Microsoft Outlook PST file format with different size as per user requirement.
  • Message Filtering Option that users can easily filter the message from a specific date from and to.
Selected Message and Preview Option
  • Preview Option: After successful completion of an Offline OST file to PST file conversion process, the OST conversion tool will generate a preview option on the bottom side which will include the email address (with attachments) with Meta Properties like Bcc, Cc, To, Time, Date, etc.
  • Selective Message Option: If you want to select messages from emails to PST Outlook data file or other file formats, then you can select the message by tick mark from the left side on the emails list.

Error Problems? Fix Your Problems.

Exchange Server
Virus or Malicious
Abnormal Outlook

More Features...

 Support Encrypted Exchange OST File

Whenever, you may be getting an error due to lost access to your encrypted OST data. In such a situation, you need to use an OST to PST tool that helps you to fix encrypted OST files & convert it to PST format securely.

 Recover Deleteed Messages from OST File

OST to PST recovery software can easily recover hard deleted messages emails from OST file

Feature Comparison of Trial & Full Version of OST To PST Converter

Product Features Free Version Full Version
Add and Export Single & Multiple OST File
Support Password Encrypted OST Files
Preview OST Emails with Attachment
24*7 Tech Support & secure 100%
MS Windows 10/8//8.1/7/XP/Vista
MS Oulook 2019, 2016, 2013 and below version
Export OST to PST, MBOX, EMLX,
30 Items Per Folder All Items
Migarate OST to Office 365, Exchange Server, Gmail 30 Items Per Folder All Items
Price FREE $29
Download Buy Now

Steps for OST to PST Converter

OST to PST Converter software scans inaccessible OST files, load all OST items like email, contacts, calendar, etc. data and allows its you to save them in easily MS Outlook PST files by following the steps mentioned below:


Software Specifications

Software Download

Size 5.0 MB
Version 6.0

Demo Limitation

Demo version allows you to generate Preview of contents of OST mailbox data & Export only 30 Items per Folder from OST file to PST, Office 365, EML, MSG & MBOX.

System Requirement

1GHz processor

Minimum 512 MB of RAM

Hard Disk
Minimum 50 MB Free Space HD

Operating System

10, 8.1, 8, 7, Vista, XP, 2000, 98, NT Windows Server 2016/2012/2008 R2/2008/2003 R2/2003 (32-bit & 64-bit)

MS Outlook Versions

MS Outlook
2019/2016/2013/ 2010/2007/2003/2002/2000/98 and 97

Software Delivery


Frequently Asked Questions

What are the possibilities of accessing the contents of an Exchange offline mailbox when in orphan state?

The Exchange offline mailbox as OST of users can be saved to MS Outlook PST file format using this OST to PST Converter for retrieval the access of its contents for commercial stability. The procedure to convert orphaned OST file to PST file is very simple to understand with this OST converter tool.

What can I save using the trial version of software?

With the trial version of the software, you can save only 30 items per folder. However, in order to save all OST items, you need to purchase the full version of the software.

What is the need to convert Exchange OST file to PST file?

You may require converting from OST to PST in any of the following cases:

  • Your OST emails mailbox on the Exchange Server is accidentally deleted and you need to access your emails.
  • You are facing issues while synchronizing Outlook with Live Exchange Server.
  • You need to carry your individual or business emails to a different organization
How much time does OST Conversion software takes to perform conversion procedure?

Depend on heavily size of your OST file to take time to perform conversion process.

Is Software repair corrupt OST file?

Yes, Software easily convert corrupted OST file into PST file.

What if I have an issue after the OST file conversion?

If you face any issue during OST file conversion or after, you can contact our technical support team

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