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Stellar OST to PST Converter

Perform secure conversion of OST files to Outlook-importable PST files

Professional OST conversion tool that easily converts objects in an OST file into PST format and exports them to a newly created PST at user-specified location.

  • Converts emails, contacts, notes, calendar entries, and journals
  • Preview of converted messages in a three-pane structure
  • Saves the converted mail messages as MSG, EML, RTF, HTML, and PDF formats
  • Easy arrangement of scanned messages based on From, To, Subject, Date, Type, Attachment, and Importance
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*Download the free trial version to scan & preview your convertible mail items.

Stellar OST migration tool performs a safe conversion of your OST to a PST file without altering the email text formatting and the original folder structure of your mailbox. Some remarkable features of the software are as follows:

Migrate OST to PST  icon

Migrate OST to PST

Stellar OST to PST extracts every mail component present in your OST file and restores them to a new PST file. This tool can effectively convert emails, contacts, attachments, notes, journals, calendar entries, etc. Read More

Preview of Mail Objects icon

Preview of Mail Objects

Software provides smart preview options of all the converted mail objects in a similar three-pane structure. The preview window shows the calendars, contacts, tasks, and journals are presented in a very professional manner and is very similar to your MS Outlook that you use on daily basis. This ensures ease of use and gives a peek into the actual conversion results.

Safe and Risk-Free OST Conversion  icon

Safe and Risk-Free OST Conversion

The software ensures precise OST to PST migration by averting all possible risks of loss of formatting and other mail attributes. It also places a counter against each mail folder to display the number of converted items.

Find & Save Individual Mail Message as EML or MSG  icon

Find & Save Individual Mail Message as EML or MSG

This utility allows you to carry out an extensive search of specific email messages after the scanning based on parameters, such as 'To', 'From', 'Subject', and 'Date'. You can select the desired emails from your mail folders and save them either as EML or MSG files in your system.

Impressive Arrangement of Scanned Emails icon

Impressive Arrangement of Scanned Emails

After the OST file is scanned, the software gives the option to arrange the different mail message on the basis of Date, From, To, Subject, Type, Attachment, Importance, Show in Groups etc. This option is very helpful to sort and organize the messages according to the defined groups.

Save Converted File at Desired Location icon

Save Converted File at Desired Location

The advanced 'Save' option of this OST Repair tool gives you the privilege to save your converted file at a desired location in your system or on any network disk recognized by the operating system.

Support and Compatibility  icon

Support and Compatibility

MS Outlook: Support for MS Office 2016, 2013 (32 bit version and 64 bit versions), MS Office 2010 (32 bit and 64 bit versions) / 2007 / 2003 / 2002 (XP) / 2000
Operating System: Windows 10 / 8 / Windows 7 / Windows Vista / Windows XP

Here is the Advanced OST to PST Converter – Tech, a must for all administrators and technicians who deal with the frequent need of converting Outlook OST file to the respective PST file. In addition, the tool is capable of compressing or splitting the converted OST file at the time of saving it based on various criteria. Read More…


download buy now

*Download the free trial version to scan & preview your convertible mail items.



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  • How I can use this software to save only a few specific emails in my Outlook OST?

    Stellar Convert OST to PST allows finding the desired emails in your converted OST file and saving each email either as an 'EML' file or 'MSG' file at any user-specified location in the system. You should follow the given procedure to find and save specific email messages using the software:

    Once the scan is completed, click 'Find' button on the tool bar. The 'Search Messages' dialog box is displayed on the screen.

    Click 'Mail' > 'Data Files'.

    Specify the following search criteria in the dialog box:

    To: Specify a part of the recipient's email address or the complete email address. You can separate the email addresses of different recipients using ';'

    From: Specify the email addresses of senders. You can separate individual entries by a ';'.

    Subject: Specify the subject property of the emails you need to find. You can provide a few characters, words, or the complete subject line of the email.

    Date: Check the 'Select Date Field' check-box and specify the desired date. This will help to find all the emails sent or received on this specific date.

    In the same dialog box, click 'Find Now'.

    The software initiates the search process and displays all the found emails in the bottom pane.

    When you right-click an email in the search results, two options are displayed: 'Save as EML' and 'Save as MSG'. >

    Choose the desired option to save the email in the respective format.

  • I have forgotten the path of my OST file to be converted. Can I search the file using Stellar OST To PST Converter?

    Yes, Stellar OST To PST Converter 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.

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

    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

  • How much time does the software takes to perform conversion process?

    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.

  • After conversion, how can I import this PST file into MS Outlook application?

    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, you will see a second personal folder named 'Stellar Phoenix Outlook PST Repair' containing all your mail folders.

  • In which file formats can I save the converted OST file?

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

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