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Top Use Cases

When to Use OST to PST Converter Tool?

Export OST to PST without Exchange profile

When a user's mailbox gets deleted from the Exchange Server without a backup, the mailbox data is retrievable using its OST file. However, once the user's account gets deleted from the server's Active Directory, the OST file becomes inaccessible. To regain access to mailbox data, OST files need to be converted to PST, as PST files can be accessed independently. Stellar Converter for OST converts the inaccessible OST file to PST, which can then be imported back to the Exchange server and accessed through Outlook.

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Migrate from Hosted Exchange to Microsoft 365

While using the Hosted Microsoft Exchange service, if the server gets compromised and users lose access to their emails, the Offline Outlook Data File (.ost) serves as a vital backup of all mailbox data. Stellar Converter for OST can migrate these OST files directly to Microsoft 365 while preserving the data and maintaining the original organizational structure. This ensures that all emails, attachments, contacts, and other crucial information remain accessible and secure, even in the event of a server failure or security breach.

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When Offline Outlook Data File (.ost) Synchronization Fails

There are instances when the OST file becomes inaccessible. This will happen when the OST file fails to synchronize with the Exchange server due to connectivity or server errors. OST becomes inaccessible even when the user account gets deleted from the Exchange Server as OST will no longer have access to the server for synchronization. In such cases, user has to rebuild the OST files, but this happens when the mailbox is still active on the server. Stellar Converter for OST extracts the data from OST files even when the mailbox is no longer active on the server.

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Reviews & Feedback

Recommendation by Microsoft MVPs

"A brilliant piece of software provided by Stellar Phoenix "Convert your offline OST to PST file with Stellar OST to PST Converter Tool to get back your Emails" can help you achieve this."

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mvp
Edward van Biljon(MVP, Microsoft Community Contributor)

"Stellar Converter for OST helps admins extract all mailbox data such as emails, attachments, contacts, calendars, tasks, notes and journals from OST files, even if inaccessible for Outlook, and ingest that data into a live Exchange server or Exchange Onli"

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mvp
Nuno MotaSenior Exchange and Office 365 Consultant

"I have been using Stellar OST to PST converter since 2010 as an MSP provider using the Tech License and it has worked wonders for Outlook 2003 to 2016 conversions of OST Files."

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mvp
Daniel BeatoSystem Administrator

Software Features and Functionalities

Advance Features of OST to PST Converter Software

Converts Large-Sized and Encrypted OST Files to PST:

The software converts large OST files into PST files, ensuring that all mailbox data is properly managed and accessible. Additionally, the software converts encrypted OST files to PST, which provides the user access to encrypted mailbox data. This allows users to export and access all the important data, irrespective of its size or type of encryption.

Follow these steps to convert an OST file into PST file by using the Stellar Converter for OST software:

  1. Run Stellar Converter for OST
  2. Browse and select the Offline Outlook Data File (.ost).
  3. Click 'Convert' button to start the conversion process
  4. Click 'Save Converted File' button to save the mailbox data
  5. Select File (.pst) as the file format to save the converted data in PST file.
  6. Click 'Browse' to specify the location and click 'OK' to save the data
Free Download100% Secure
Converts Large-Sized and Encrypted OST Files to PST
Converts Large-Sized and Encrypted OST Files to PST

Auto-Locates and Lists Offline Outlook Data Files:

The Stellar Converter for OST simplifies the process of data extraction by automatically identifying OST files associated with an Outlook profile. Once identified, the software extracts the mailbox data from the OST files.

The feature also offers the following additional functions:

  1. Automatic OST File Detection: Use the List Profile Button to automatically detect and list configured profiles in Outlook from sources such as IMAP, Exchange, and Microsoft 365 profiles.
  2. Eliminates Manual Search: By identifying OST files automatically, there is no need for manual search.

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Free Preview of Offline Outlook Data File:

The software provides a free preview feature that displays a detailed view of the mailbox items in the converted PST. Users can verify the data from the preview and select specific items that have to be converted.

The software provides following additional options in the mailbox preview window:

  1. Quick Search: To search a particular email, user needs to type the keywords in the search bar of a particular column. The columns that support quick search are From, To, Subject, and Date.
  2. Sorting Columns: You can sort email and media items using the table headers in the middle pane. Click on the column heading to sort the column in ascending order. Click on the same heading again to change the sorting order from ascending to descending, and vice versa.

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Free Preview of Offline Outlook Data File

Know your Product Better

Other Features of OST to PST Tool

Find and Save Individual Mail Items

Find and Save Individual Mail Items

Users can search for a specific email item from the converted OST file using the “Find Message” button. Clicking on this button will open a search window where the user can enter the search parameters like "To," "From," "Subject," or "Message text," to filter the results. The search feature simplifies the process of locating a desired email item. Once located, right-click on the mail item and save it in the preferred location in the preferred format.

Auto-Split Large PST Files

Auto-Split Large PST Files

Stellar Converter for OST offers an Auto Split PST feature that automatically divides a large PST file into smaller files, each with a maximum size of up to 45 GB. By doing so, it helps prevent corruption that can occur with excessively large PST files. This feature safeguards the data and also makes it easier to handle and store mailbox content.

Convert OST to PST or Multiple File Formats

Convert OST to PST or Multiple File Formats

The software allows users to extract mailbox data in various file formats, including PST, MSG, EML, RTF, HTML, and PDF. Additionally, users can view the content of the OST file in applications such as Outlook, web browsers, PDF readers, text readers, etc.

Save and Load the Scanned File

Save and Load the Scanned File

The OST converter tool enables users to save the "scan" information of an OST file as a DAT file. This feature splits the conversion process into two stages: scanning the OST file and converting it to PST. Users can load the DAT file later for conversion, making it possible to complete the process at different times or on different systems.

Extracts All Offline Outlook Data File (.ost) Items

Extracts All Offline Outlook Data File (.ost) Items

The Stellar Converter for OST software is designed to extract all the mailbox items from OST files, including emails, attachments, contacts, calendars, tasks, notes, and journals. It preserves the original mailbox hierarchy and the integrity of the mailbox, ensuring that the organization of folders and subfolders is unchanged.

Stellar Technician for OST to PST converter tool

Stellar Technician for OST to PST converter tool

The Technician edition of Stellar Converter for OST offers advanced features, such as batch conversion of multiple OST files, splitting or compacting PST files, and direct migration to Microsoft 365. These capabilities ensure a smooth transition of email servers, making it an efficient solution for complex migration needs.

Screenshots

How to Use Stellar Converter for OST

Select OST File
Profile List or Select OST
Check Preview
Search Emails
Save Converted File
Browse and Save
Advanced Filters
See all Screenshots

Select Offline OST File

Select Offline OST File from the Home ribbon. A screen appears with the Profile List tab and a tab to Choose Mailboxes Manually.

Select OST File

List Configured Outlook Profile or Choose OST file manually

The List Profile tab displays all the configured Outlook profiles and Choose Mailboxes Manually tab locates outlook data file (.ost).

Profile List or Select OST

Preview the PST files after conversion

The software displays a preview of the converted PST files in a three pane structure.

Check Preview

Use Find Message option to Search for Emails

Click Find Message button on the Home Ribbon and enter the search criteria. Click on Find Now button to find the messages corresponding to the criteria.

Search Emails

Save the Converted PST Files

Click Save Converted File button in the Home ribbon. Select the desired format and destination for the file. Click OK to save the file.

Save Converted File

Browse the destination to Save Converted File

Click on Browse button to save converted file at specified destination. Check Recover Deleted Item box to recover deleted items. Check auto split PST to Split the PST files into smaller files.

Browse and Save

Apply Advance Filter Option

In the Apply Filter window, you can include or exclude junk and deleted items folders, set a date range, and specify sender IDs to exclude before clicking "Apply" to implement the selected filters.

Advanced Filters

CASE STUDY

How Stellar Converter for OST Software Helped Southend-on-Sea Borough Council

The client organization retrieved vital business mailbox data that would have otherwise been lost, ensuring the integrity of emails, attachments, and components for archival purposes. Stellar Converter for OST facilitated rapid extraction with minimal administrative effort, delivering high-precision, efficient, and reliable results to meet the client's needs effectively.

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Customer Verdict

This is a very handy and easy to use software that I would recommend to anyone.

Southend-on-Sea Borough Council, Essex, England

USC Inc. Successfully Migrates Mailbox Data From OSTs To Office 365

USC achieved seamless 100% mailbox migration to Office 365, including data from OST files, meeting deadlines with minimal manual involvement. The OST to PST converter also recovered deleted mailbox data without risking file corruption.

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Customer Verdict

This is a very handy and easy to use software that I would recommend to anyone.

United Software Consultants, Inc.

Marcrom restores its new server with stellar's ost to pst converter

Ivan found it challenging to select effective software but was highly satisfied with Stellar Converter for OST on his third attempt. It fulfilled all his business needs and outperformed other options, prompting him to endorse Stellar Data Recovery's superior products.

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Customer Verdict

This is a very handy and easy to use software that I would recommend to anyone.

MARCROM

Customer Reviews

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AWARDS & REVIEWS

Most tested. Most awarded. For over 30 years, we’ve been recognized as experts

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ExpertExchange star
ExpertExchange

Stellar Converter for OST saves your business & time

With its great features, Good Interface, and ease of using Stellar OST to PST deserves 10 out of 10.

MakeUseOf star
MakeUseOf

Convert OST files to PST easily

Stellar Converter for OST makes OST to PST conversion process hassle-free

SpiceWorks star
SpiceWorks

Awesome OST TO PST Software

Stellar OST to PST converter has worked wonders for Outlook 2003 to 2016 conversions of OST Files. This application I use and resort to.

msexchange.org star
msexchange.org

Helps admin to easily convert any OST file to PST

It converts an entire OST file, or items within an OST file, into a PST without changing the original content format or structuring.

TweakTown star
TweakTown

Powerful OST to PST Converter Tool

Stellar Converter for OST converted all items from OST file to PST with complete integrity & precision.

Data Sheet

Technical Specifications

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About Product
Stellar Converter for OST
Version: 12.1.0.3
License: Single System
Edition: Corporate, Technician, & Toolkit
Language Supported: English, Deutsch, Français, Italiano, Español, 日本語
Release Date: November, 2023
System Requirement
Processor: Intel compatible (x64-based processor)
Memory: 4 GB minimum (8 GB recommended)
Hard Disk: 250 MB for installation files
Operating System: Windows 11, 10, 8.1, 8, 7 (64 Bit only)
Version Support: MS Outlook: Office 365, 2021, 2019, 2016, 2013, 2010, 2007 (64 Bit only)
Documents

Useful Articles

Product Related Articles

How to convert an OST file to PST or other file formats?

Run Stellar Converter for OST and select the Outlook OST file. Then, scan the OST and preview the mail items stored in the OST file. Next, click Save Converted File button and choose the file format to extract and save the converted data from the OST file.

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How to save an individual email message in different file formats?

In the Preview screen, displayed after scanning the offline Outlook data file (OST), select the specific email message that you need to extract. Then click Save Converted File button and choose the file format to save the selected emails.

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How to Export Encrypted OST file to PST?

An error can occur while opening an encrypted OST file, thus resulting in loss of access to the mailbox data. You can export the encrypted OST file to a PST (Personal Storage Table) file to resolve this problem. Stellar's OST PST converter tool exports and converts encrypted OST file to PST file, thereby enabling access to the mailbox data.

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TRY BEFORE YOU BUY

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*Free Demo Version allows you to preview all the converted file data.

Find Your Answers

FAQ

Follow these steps to convert an OST file into PST file by using the software:

  1. Run Stellar Converter for OST
  2. Browse and select the Offline Outlook Data File (.ost)
  3. Click 'Convert' button to start the conversion process
  4. Click 'Save Converted File' button to save the mailbox data
  5. Select Outlook Data File (.pst) as the file format to save the converted data in PST file
  6. Click ‘Browse’ to specify the location and click ‘OK’ to save the data

The software will scan the OST file & list all the items preview in a tree-structure view. Verify the data and save them at your destination location.

The OST to PST Conversion Software is best option to migrate Hosted Exchange mailboxes to Microsoft 365.

  1. Run Stellar Converter for OST Technician Edition
  2. Select the Offline Outlook Data File (.ost)
  3. Click 'Convert' to start conversion process
  4. Click on 'Save Converted File' button to save OST file
  5. Select 'Export to Microsoft 365' and click on 'Next' button
  6. Enter Office 365 or Microsoft 365 credentials and click OK.
  7. This will export the OST file to Microsoft 365 mailbox directly

Stellar Converter for OST Technician Edition will scan the OST file and list all the mailbox folders in the left pane. Click on a folder to preview its items and migrate them directly to Microsoft 365. Download Now

  1. Launch Microsoft Outlook.
  2. Open File tab.
  3. Click on ‘Open & Export’
  4. Now Select Import/Export option.
  5. Click on ‘Import from another file or file’.
  6. Click on ‘Next’ button.
  7. Select Outlook Data File (.pst)
  8. Click on the Next button.
  9. Browse the file to import & Click on the ‘Next’
  10. Choose Finish.

Now Microsoft Outlook will start importing the items of your Outlook Data File (.pst) immediately.

The Demo version of the software converts the Outlook OST file and allows to preview all the mailbox data.

Yes, Stellar Converter for OST allows you to search for the OST files (Offline Storage Table) stored in any folder, sub-folder, or drive in your system. Use 'Find Outlook File' feature of the software to locate the OST files.

You would need to convert an OST file into PST file in any of the following cases:

  • You need to access the emails from a mailbox that is deleted from Exchange
  • You are facing issues while synchronizing Outlook with Exchange Server
  • You need to migrate the email organization to a different platform
  • You need to recreate or rebuild the OST file in case of an Exchange Server crash/disaster
  • You are facing difficulty with Outlook Import/Export Wizard
  • You need to change the location of the offline Outlook Data File (.ost) in Microsoft Outlook
  • You need to move Outlook OST file to another disk

Or facing an error while accessing OST file –


  • Outlook is using an old copy of your Offline Folder File (.ost). Exit Outlook and delete the .ost file, and restart Outlook.
  • errors have been detected in the file outlook ost
  • outlook cannot configure OST file

The total time for converting an OST file into a PST file depends upon the OST file size. Stellar Converter for OST takes approx. Seven minutes to convert per GB of OST file into PST.

The software can save the converted OST file into MSG, EML, PDF, RTF, or HTML file formats.

If you face any problem during or after an OST file conversion, you can contact the Stellar support team: support@stellarinfo.com

The software is available in two variants – Corporate & Technician. If you only need to convert an OST file into PST file, then you should go for Corporate. If you want to convert and also compact or split a PST file, then you should use the Technician edition. The Technician edition can also export the OST file data to Office 365.

Stellar Converter for OST is available in three different editions: Corporate, Technician, and Toolkit. The Corporate edition is available with a single-device license and can be installed only on a single device or system. The Stellar Converter for OST - Technician and Toolkit editions are available with a Bulk Licensing option. If you choose Technician or Toolkit edition, you can purchase licenses based on the number of devices or systems you have. At a time, you can purchase bulk licenses for Technician and Toolkit editions for 1, 5, 10, 25, 50, 100, 200, or 500 devices or systems. Read More

Yes, the software converts OST file that is not connected to Exchange Server.

Yes, the software guarantees OST to PST file conversion; however, we strongly recommend trying the free Demo version of the software which previews the mailbox data stored in OST and also converts up to 20 mailbox items per folder. After ascertaining the software effectiveness, you can activate it with a license key and then convert & save all mailbox items in PST or other file formats.

Yes, you can open the converted OST on another system after saving the OST file in a format such as PST, EML, RTF, or other supported file formats.

The software does not perform any action on the corrupted OST file. It converts the corrupt OST file in PST file, thus enabling access to the OST file data.

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