OST To PST Converter

Excellent (4.9/5) 1219 Reviews

Tool To Convert OST Mailbox Data to PST, MBOX, EML, MSG, NSF, HTML, TEXT, EMLX, NSF, OLM, PDF, vCard, vCal, Office 365, Exchange Server, Gmail, G Suite

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

Software Compatible with

  Outlook 2019  |    Windows 10

Download Best OST To PST Converter is a power application that easily convert OST to PST file format and recover corrupted OST Mailbox folders such as email attachments, contacts, calendars & deleted Items. And also, migrate mailbox from OST files to Office 365 (online) user/admin account directly

  • Convert OST Mailbox Data → Email, Contacts, Calendar, Attachments and other.
  • Save Multiple File Types → PST / EML / MBOX / MSG/ EMLX/ TEXT/ NSF/ OLM/ vCard/ CSV
  • Contacts and Calendar → Migrate its into vCard and vCal respectively.
  • Split OST By Size → Split Large-Sized OST File by Small File
  • Batch Conversion → Multiple OST files can directly Converted into PST files
  • Preview OST Items → Tool shows the preview OST Items before actual conversion.
  • Migrate To Office 365 → Migrate OST Files to Office 365.
  • Migrate To Cloud → Migrate OST to Exchange Server, Gmail & G Suite. [Tech Version]
  • Search OST → Search Options to find OST file from any Drive
  • Supports OST → Software works on IMAP & Hotmail OST File
  • Filter Options → Select Emails by Date Filters & Naming Conversion
  • Deleted Data Restoration → Restore Permanently Deleted Items from OST
  • File Limitation → Convert Large OST Files to PST Files upto 250 GB Successfully Tested.
  • Encrypted OST file → Recover Orphaned, Password-protected, Encrypted OST and Decrypt & Remove S/MIME & OpenPGP encryption from Outlook OST
  • Wide Compatibility → Tool is compatible with MS Outlook and Windows Versions

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

Expert Review


RecoveryMails for 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.


RecoveryMails 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 files to Outlook PST & Other format

Using OST To PST Converter software, user can convert all OST Items into different file format: PST / EML / MBOX / MSG / vCard / ICS file format.

  • Create Seperate PST File for Each OST File - After loading multiple OST files, user want to save each OST file to seperate PST file format.
  • Split Option for PST File - By this option, split large-sized OST file into a split PST file after according to a specific size
  • Apply Date Filter - Using Filter option, you can filter the valuable email items from OST file to other format.
Add Multiple OST Files to Conversion

Export Options has 3 different options to add OST file.

  • Select File(s) - Select a particular OST file by Add Files to add on list and to remove select a particular OST file from list by Clear Files
  • Select Folder - Select a particular folder/drive which contains OST files for loading multiple OST files in one go.
  • Search File - It automatically searches OST file from local system drive, if it's location is unknown by the user

Using this method, user can convert multiple OST files to PST file and other format as well.

Migrate OST file(s) to Office 365 Account

OST Conversion software allows you to migrate your complete Items such as Mail folder along with attachments, Calendar, Contacts, Tasks, Journal etc. from single or multiple OST file(s) to a cloud-based Office 365 Admin/User Account Credentials directly without any loss data.

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

Corrupted OST File Indicator while Loading

OST To PST Conversion tool has advanced features that can easily detected corrupted Exchange/IMAP offline .ost file in Red Color in the preview panel while loading multiple or single OST file(s).

After successfully loading OST files, user can easily restore damaged or inaccessible .ost file to .pst format as well as migrate to Office 365 user account.

Search OST File(s) within Selected Folder/Drive

Search File Option feature within software that helps save users time to find valuable OST files from any drive like C:, D:, and other drive

After successfully loading OST files, user can easily convert damaged offline OST files to Outlook PST file format.

Generation Export Report After Conversion

After a successfully completion of an Offline OST file to PST file conversion process, OST to PST Converter tool will generate a complete export report. This report contains all details of conversion prodecure with file_name and their no. of mailitems in TXT file.

Steps for RecoveryMails OST to PST Converter

RecoveryMails 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 1.0

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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