Advanced Software to Convert, Split, or Compact an OST File

Stellar Converter for OST is an advanced software for converting the inaccessible OST file into PST file and extract the mailbox data with 100% precision. The tool also allows the user to Split or Compact the output PST file with options to export the PST file directly to Live Exchange or Microsoft 365.

*Free Download enables you to preview the converted file and save 20 items per folder.

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When To Use Stellar Converter For OST Software?

In several scenarios, you may find this tool of great help. For example, In case there is need to Extract Mailbox Data from OST File especially when you delete a user mailbox from Exchange and there is no backup, the only way to access the mailbox data is through the OST file. However, you cannot recreate or rebuild OST file if the Exchange user account is deleted from Active Directory. Stellar OST converter tool converts the inaccessible OST file and extracts the mailbox items in a PST file. Likewise, when there is need to migrate deleted mailboxes without backup. Consider that you are upgrading your Exchange organization and need to migrate a large number of mailboxes, including the deleted mailboxes. If you do not have a local backup of the deleted mailboxes, the only way is to extract the data from the OST. The Stellar tool can convert OST to PST and extract the complete mailbox data.

Key Features

Converts Large-Sized OST File

Stellar has rigorously tested its OST to PST converter tool for converting large-sized OST files. The software performs the fastest conversion of large OST into PST. It helps convert OST file when Microsoft Outlook or Exchange Server is crashed or inaccessible or Outlook faces synchronization issues. It converts the OST file into PST and extracts the data with 100% precision.

Extracts All Offline Outlook Data File (.ost) Items

The OST to PST converter by Stellar extracts all the items from OST - emails, attachments, contacts, calendars, tasks, notes, journals, etc. The tool performs precise OST 2 PST conversion and maintains the original integrity of mailbox items. It is the best solution for any situation requiring the user to move the OST file to PST and convert OST to PST without an Exchange profile.

Auto-Locates and Lists Outlook Data File

The software auto-locates and lists the OST files from the default location. This allows you to select the OST file quickly, scan it, extract mail items, and save them in desired format. You can also browse and select the OST file manually or use the ‘Find’ option to search and select the OST file for conversion when the location is not known.

Conversion of Encrypted OST File

A user may face an error when trying to open an encrypted OST file, leading to loss of access to the mailbox data. Converting the encrypted OST file into PST (Personal Storage Table) file can solve this problem. Stellar's OST to PST converter converts the encrypted OST into PST, thus allowing access to the mailbox data.

Free Preview of Offline Outlook Data file

The software displays a detailed preview of the mailbox items stored in the converted OST file. The user can click a folder, email, calendar, or other mailbox items listed in the Preview pane to view its contents. The Preview feature helps identify and extract specific items from the offline Outlook data file (OST).

Sorts and Organizes the Messages

The OST PST converter software extracts OST file data in an organized manner while maintaining the original arrangement of mail items. Once the OST scanning is completed, the software allows sorting and organizing of emails by Date, From, To, Subject, Type, Attachment, Importance, etc.

Find and Save Individual Mail Items

You can use the Find Message button to open the Find Message window and search specific emails or mail items based on various parameters, such as ‘To,’ ‘From,’ ‘Subject,’ ‘Message text,’ etc. You can then right-click on the email to save it in PST, MSG, EML, RTF, HTML, or PDF file format at your desired location.

Allows to Save and Load the Scanned File

The OST PST converter tool allows the user to save the OST file 'scan' information as a DAT file to load it later for the conversion. This feature helps split the OST to PST conversion process into two stages, doable at different times or on different systems.

Auto-Split Large PST Files

The OST to PST converter software features an Auto-Split option that automatically splits an oversized or large PST file at approximately 45 GB while saving the converted mail items from OST files. This helps prevent PST file corruption due to its large size.

Exports the OST Data to Microsoft 365

The software can directly export the OST to PST converted files to Microsoft 365. It allows the user to log in to a Microsoft 365 account and exports the mailboxes directly through its interface. The OST to Microsoft 365 Export feature is available in the Technician Edition of the software.

Converts OST into Multiple File Formats

The OST to PST conversion tool allows the user to extract the mailbox data in different file formats, such as PST, MSG, EML, RTF, HTML, and PDF. In addition, this allows the user to view the OST file contents in applications, such as Outlook, web browser, PDF reader, text reader, etc.

Converts Multiple OST Files in a Batch

The tool can convert multiple OST files into PSTs through a single batch process. The Batch Conversion feature is helpful when an organization is moving to a new email service and needs to extract mailbox data from several OST files. The Batch Conversion feature is available in Technician Edition.

Free OST to PST Conversion

The tool allows free OST file to PST file conversion and extracts 20 emails per folder. Use this free OST to PST converter to scan the OST file. After scanning the Outlook OST file, preview the converted OST file and save the mail items in a PST (Personal Storage Table) by clicking the 'Save converted file' button.

Splits Large-Sized PST File

In addition to auto-split based on size, the Technician edition of the software also provides option to split the PST file in the sizes of 1-50 GB while preserving the original organization of the mailbox data. The feature helps in managing the large PST files.

Advanced Filter Options

The OST converter software provides advanced filter options to include or exclude messages from the ‘Junk Email’ and ‘Deleted Items’ folders. You can also filter out specific messages or mail items based on the date range and email ID while saving or exporting the mail items to a new PST, Microsoft 365, or live Exchange.

*Free Download enables you to preview the converted file and save 20 items per folder.

How It Works?

Software Specifications

About Product

Version 12.1.0.0
Release Date October, 2022
License Can use only on a single system
Edition Corporate, Technician, & Toolkit
Language SupportedEnglish, German, French, Italian, Spanish, Japanese
System Requirements

Processor: Intel-compatible (x86, x64)
Operating System Windows 11, 10, 8.1, 8, 7
Memory: 4 GB minimum (8 GB recommended)
Hard Disk:250 MB of free space
Version Supports:MS Outlook: Microsoft 365, 2021, 2019, 2016, 2013, 2010, 2007
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*Free Download enables you to preview the converted file and save 20 items per folder.

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FAQ

A.

Use following steps for successful conversion:

  • Run Stellar Converter for OST software.
  • Select your OST file from ‘Browse’ option.
  • Click ‘Convert’ button to start the scanning process.
  • Click 'Save Converted File' button to save OST file into Different file formats.
  • Select ‘PST’ file option to convert OST file to PST format.
  • Click on ‘Browse’ button to select destination path and click ‘OK’ button.
  • Congratulations, your PST file saved at your specified location.

The software will scan the OST file and list all the mailbox folders in the left pane. Click on a folder to preview its items and save them at a destination location.

A.

With the demo version of the software, you can save only 20 items per folder. However, in order to save all the converted items, you need to purchase the full version of the software.

A.

Yes, the software allows you to search for Offline Folders (OST) files in any folder, sub-folder, or drive in your system. You can use the 'Find Outlook File' option of the software to locate OST files in the selected drive and choose the desired file for conversion.

A.

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

  • Your mailbox on the Exchange Server is deleted accidentally and you need to access your emails.
  • You are facing issues while synchronizing MS Outlook with Exchange Server.
  • You need to carry your business emails to a different workplace or organization
A.

The time required by the software to perform ost to pst conversion heavily depends on the size of your OST file. The software efficiently scans your OST file and tries to deliver the best performance with reliable and accurate results.

A.

For importing your PST file into MS Outlook, follow these steps:

  • Start MS Outlook.
  • On the 'File' menu, click 'Open' and then select 'Outlook Data File'.
  • Choose the PST file you need to import and click 'OK'.
  • After the process is completed, MS Outlook will create a new personal folder (PST) file.
A.

The software gives the option to save the converted OST file in MSG, EML, PDF, RTF or HTML formats.

A.

The Software does not perform any action on corrupt OST file. The software converts corrupt OST file into accessible PST file which you can easily import into MS Outlook to access all your OST file data.

A.

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

A.

The software offers two versions – Corporate & Technician. If you only need to migrate OST file into PST file format then you should go for Corporate. Some advanced features of Corporate version are listed on the page. If you want to convert as well as compact & split large OST file then you should go for Technician version. Technician version also has the option to save OST file into Microsoft 365.

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