There are two methods to convert OST file to PST file but I suggest you the third-party tool that is Regain OST to PST Converter Software where you can easily Convert your OST file to PST file without any technical knowledge.

It shows the preview of recovered mailbox along with all the data of OST mailbox such as email, draft, task, attachment, notes, contact etc.

Use free trial version and see the original results.

Use this Regain Outlook PST Converter Software and Migrate your Outlook PST file to Other format.

Regain Outlook PST Converter offers dual options to choose PST data for conversion, such as Select Folders or Select Files, so users can choose multiple or single PST files and folder with PST files.

This product is best suited for batch PST file conversion to save efforts and time.

You can also Use this Software Free trial Version and Save 30 Emails per folder at Free of Cost.Support All MS Outlook Version:-This tool support all the versions of MS Outlook.

This tool integrated with easy GUI interface so anyone can use this application easily.

No technical skill is require to access this tool.Download this Software free trial version from here: https://download.cnet.com/Regain-Outlook-PST-Converter-Software/3000-2369_4-77945669.html

This Regain PST to MBOX Converter is an easy and smooth solution to perform complete and explicit PST to MBOX Conversion.

Through this Software All of the data can be converted into MS Outlook PST to MBOX format and all of the email formatting will remain intact with other information.

This tool have feature to show the preview of all scanned emails on software interface before saving the mailboxes.

Where you can check your selected or desire emails in preview items.

You can use this feature without buying the application.Try this Software free demo version from here: http://www.psttomboxconverter.emltopstutility.com/

If you want to convert OST file data into PST then simply go with Regain OST to PST Converter tool, This tool also converts OST data into various formats like: PST, EML, MSG, MBOX, HTML, ICS, VCARD formats.

The user can directly migrate all their database into Office 365 & Live Exchange Server.

By taking help of this Software all users can recover OST file with emails, contacts, calendars, task, notes, inbox items, journals and appointments.

Here is a Software which convert your Outlook PST file into Other format and this Software also Repair Corrupted Outlook PST files.

This Regain Outlook PST Converter Software allows users to import PST files into several email clients like PST to Apple Mail, existing PST to latest Outlook, PST to Exchange Server, PST to G Suite, PST to Office 365, PST to Maildir, PST to Outlook.com, PST to Windows Live, PST to Thunderbird, PST to Zimbra, and PST to Yahoo.Supports both Unicode and ANSI formats:-This PST Converter tool supports conversion of both Unicode and ANSI PST files.

Users can convert PST files of Outlook 2019, 2016, 2013, 2010, 2007, 2003, and 2002 to any of your desired email client with this software.Try this Software free demo version from here: https://download.cnet.com/Regain-Outlook-PST-Converter-Software/3000-2369_4-77945669.html

I just want to suggest another brilliant Software Regain OST to PST Converter that is fully capable to Convert your OST file to PST file.

This Software also Recover corrupted OST file and deleted items too.

Before few months I was Searching solution to Convert my offline exchange mailboxes (.ost) then my friend mark suggested to use this Application.

If you have any doubt then you can also try this Software free trial version and where you can easily clear you all doubt.Download this Software free trial version from here: http://www.convertosttopstfiletool.com

You can try this MBOX file to PST file Converter tool.

This software provides two options for saving the converted files i.e.

the user can either save the converted files in already existing PST or in a newly created PST.

Regain MBOX to PST Converter software embedded with features to migrate MBOX files to Cloud Based Office 365 platform.

This tool migrate all the mbox data to Office 365 platform in just few clicks without any problem.

You can also migrate MBOX file to Live Exchange server.Preview Mailbox Items before conversion:-After scanning the MBOX file which you want to convert, shows the preview of all email items.

If you really want to export your PST file to Office 365, here is the best tool to convert your PST file to Office 365, The Software Export all Outlook Email items to Office 365 platform and Maintain the intigrity of original data.

The Software also Show the preview of mailboxes before exporting.

No File size limit to export PST file.You Can Download this Software from here: http://www.regainsoftware.com/pst-to-office365-migration.html

Migrate OST file to PST file by using this Regain OST to PST Converter Software and you can also Repair Corrupted OST file and Recover deleted OST file data if you use this amazing Software.

This tool integrated with strong algorithm and efficient to Convert everything from OST file to pst format.

This Software also Shows the Preview of all Scanned Emails in Preview items before Conversion.

you can also try this Software free trial version.CheckOut this Software free demo version from here: http://www.convertostfiletopst.com

So many Professional Software available for MBOX file to PST file converter, which can be find out in Google search.

I would also like to Suggest such an excellent MBOX file to PST file Converter Software.

Regain MBOX to PST converter software converts mailbox items in MBOX into PST format.

This tool shows all the convertible emails in preview items before saving.

In preview items, you can check your selected emails and accuracy of convertible emails.

After satisfied with preview results then you can save these emails at your desire location.

I Would like to recommend You the Best Migration tool, Where you Can Easily Convert your PST file to Office 365, you can effortlessly import PST mailbox items to Office 365.

There is no administrator privilege required for this migration.

Mailboxes can be migrated simply with login credentials.

Outlook is not required to be installed on your system.Download link here: http://www.regainsoftware.com/pst-to-office365-migration.html