OST to PST Converter

ost conversion to pst

step by step guide on how to convert ost to pst format


MailsDaddy OST to PST Converter v2.3

The software is rated by our valuable clients.

An affordable solution to recover data from corrupted, orphaned or offline inaccessible OST file and convert OST to PST, MSG, EML & MBOX formats in a couple of clicks. The tool is embedded with several helpful features to make OST to PST conversion task much effective.

  • Quick scanning process to repair offline corrupted or orphaned OST file.
  • Recovers emails, contacts, tasks and calendars from the OST to PST format.
  • Generates a complete preview of OST file data with Email attachments.
  • The OST to PST converter tool preserves folder structure & mail properties.
  • The software allows splitting converted PST files into required size of data files.
  • Export OST to PST by choosing an appropriate naming convention options.
  • Supports MS Outlook 2016, 2013, 2010, 2007 and all earlier editions.
  • OST to PST recovery tool is compatible with Windows 10, 8.1, 8, 7, XP and all other versions.

Installation   Uninstallation   End User License Agreement



Efficient Features of this Admirable OST to PST Migration Tool


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Add, Search and Scan OST Files

The application has an advance option to search and detect all .ost file extensions from any selected directory or drive. You can automatically search or manually browse an OST file to scan all mail folders or sub-folders quickly.

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Repair Corrupted OST Files

The advance algorithm of the OST to PST converter allows repairing highly corrupted, damaged or orphaned OST file. Thus, you may be able to fix all OST file errors & make OST file readable after doing OST conversion to PST.

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Recover Soft Deleted Items

The OST file conversion utility quickly retrieves soft deleted emails, calendars, contacts, tasks, notes and journals from the OST file. This option may be helpful to get back the soft deleted items from Outlook OST file.

view email content

Preview Recovered OST File Data

Once the scanning process completed, the software recovers entire data and generate an instant preview. You can simply view or read a particular item by clicking on the specific email, contact or calendar to view its content.



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Split PST File into Required Size

The OST to PST exporter tool is applicable to split resulting PST file into required size while transferring data from OST file to PST format. This is an optional choice can be used for creating multiple PSTs from single OST file.

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Quickly Convert OST to PST File

This is the most preferred option by using which you can simply copy offline folder to PST and import .ost data file into Outlook 2016, 2013, 2010 and 2007 etc. With the help of this feature you can open OST file without Exchange server.

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Multiple Export Options

The application provides many choices to extract emails from OST file and save into EML, MSG and MBOX file formats. In this way you can migrate and use OST file messages with other MSG, EML and MBOX supported email clients.

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Multiple Naming Convention

Use multiple naming convention options while saving OST file to MSG, EML and MHTML file formats. The software supports multiple naming convention options (Subject, Date, Subject + Date, From + Subject + Date, Auto increment).



Preserve Folder Hierarchy

The OST to PST converter keeps the original folder structure and maintain all folders and sub-folders in the hierarchy. You can simply click on the plus icon to expand all the folders within a respective root folder.

export email attachments

Convert Email Attachments

The main benefit of using this application is that you can easily convert Microsoft office outlook offline folders to .pst along with email attachments. All respective email attachments will be exported into their original format.

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Maintain Mail Properties

The OST to PST conversion program capably preserve and maintain entire mail properties such as: To, Cc, Bcc, From, Subject and Date etc. The tool also keeps read and unread email status while generating the complete preview.

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Export Selected Folders or Items

This is another helpful option provided by the application which can be used to export only selected folders or messages to the desired file format. So you can select needed folder and convert OST to PST file format.

Learn What is OST File & Why Need to convert OST to PST Format?

Configuration of Exchange Server account with Microsoft Outlook using "Cached Exchange Mode" enables users to save a copy of Exchange mailbox in .ost file extension. It is also known as offline storage table file which stores entire mail components such as: Emails, Contacts, Tasks and Calendars, etc. By using an OST file, the user can access data offline even as Exchange server down time.

In Which Siuations OST Files Gets Inaccssible and You Need to Convert OST to PST ?

OST Files are Outlook data files which can be only accessed when you are connected to Microsoft Exchange Server and able to sync data from the server. But sometimes you may face issues while accessing OST file due to:

  1. Orphaned OST Files: Disconnecting from Exchange server, modifying profile, changing MAPI details or updating default OST file location may be reasons due to them OST file gets orphaned. And you cannot access these OST file without converting to Outlook PST or any other file formats.
  2. OST File Corruption: OST files may get corrupted due to network/server failure, hardware/software issues, virus attack, M Outlook forced shutdown or any other technical issue. In this situation you may not able to open or read OST file data.

What Kinds of OST File Errors You May Notice?

  • OST file is in use by another application or user
  • The set of folders cannot be opened. the file is not an outlook data file (.ost)
  • Default outlook profile.ost is in use and cannot be accessed
  • OST file Internal error (error code=00000003)
  • Encounter a large numbers of conflict items
  • Outlook 2010 ost file in use and cannot be accessed

Simply Convert OST File to PST Format to Fix These Errors

PST is the most reliable file format which can be open with any earlier or later editions of Microsoft Outlook. So it is highly recommended to export OST file to PST format by using this simple to use MailsDadady OST to PST Converter.

Stepwise Guide to Make Sure How to Convert OST File to PST Format

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Watch Online Video to Ensure How to Export Data from OST file to PST

MailsDaddy OST to PST Converter Demo Limits & Specifications

By using the free demo edition of OST recovery utility you can repair corrupted OST files and preview its content along with all properties. The free ost to pst application converts first 20 items per folder only, you can place the online order to eliminate these restrictions.

Product Specifications:

Application Name: MailsDaddy OST to PST Converter
Developers: Mails Daddy Software Private Limited.
Latest Edition: 2.3
Size 13.6 MB

System Requirements:

Processor & RAM: Minimum 2.4 GHz Processor and 2 GB RAM
Minimum Hard Drive Space: 50 MB
Supported OS: Windows 10, 8.1, 8, 7, Vista, XP and All Older Editions (32-bit & 64-bit)
Supported Outlook Editions: Microsoft Outlook 2016, 2013, 2010, 2007, 2003 and all previous editions (32-bit & 64-bit)

Frequently Asked Questions of MailsDaddy OST to PST Converter

Yes, the OST to PST recovery tool is capable to find out all OST files from the selected directory or drive.
Yes, The OST file exporter also allows recovering soft deleted emails, contacts, tasks, calendars and notes etc. from the OST file.
Yes, OST to PST converter provides an advance search option by using which you can find out required emails, and directly export them to the needed format by right clicking on the respective email.
No, This is the best thing about this utility which does not require MS Exchange Server or any additional program.
No, The software allows recovering or converting a large (any size) OST file without hanging or taking much time. You can simply export an OST file to PST if the OST file is oversized.
Yes, You can repair corrupted and damaged OST file before exporting into other formats. The tool also supports offline or Orphaned OST files for the conversion process.
Yes, the tool provides several export choices by using which you can convert and save emails to PST, EML, MSG, MBOX, MHTML, TXT and RTF file formats. The software also allows exporting required contacts as .vcf and calendars as .ics file formats.
The free ost to pst converter preview all data but export first 20 items per folder only in demo edition. To remove this restriction and export all data of an ost file to pst format you may purchase a valid license and activate the software to FULL VERSION.