I'd like to draw your attention to the sysinspire OST to PST Converter utility, which can simply convert an OST file into an Outlook PST file. With the aid of this free program, users can simply repair any corrupt OST file and restore all of its accidentally lost data, as well as convert OST files into a variety of file formats, including Office 365, MBOX, CSV, EML, MSG, vCard, HTML, and PST Outlook. It features a free trial edition that allows you to simply export 50 items from an OST file to PST and other formats.
Read More:- Convert OST File to PST

Smoothly Restore & Convert OST to PST and transfer all your offline mailboxes, contacts, calendar etc from OST to PST file with best performing OST to PST Converter application. This is the easy way to convert OST items into PST on any Windows and without any issues. Along with it 100% capable to conversion data from corrupt OST file to PST, MBOX, EML, EMLX, MSG, and etc.
Quickly scan & repair damaged as well as orphaned OST files.
Generate preview of emails and export complete OST data .
Supports Microsoft Outlook 2019, 2016, 2013, 2010 and 2007 etc.
Support saving of OST files multiple file formats such as MSG, EML, EMLX and MBOX
Reliable Solution to Convert OST to PST without Microsoft Outlook.
Read more :- https://www.osttopstapp.com/
To migrate OST file to PST download this fastest utility name as the OST to PST migrator application. It helps all users to fix all issues related to your OST file without creating any problem and also it enable users to migrate OST file with all its inner mailbox items like- emails, chats, calendars, dates, and more to various different file formats. The application is the perfect solution for converting any type of OST file of offline with selective single or multiple items to other accessible file formats such as- PST, EML, EMLX, MSG, HTML, etc. Refer:- https://www.softakensoftware.com/ost-to-pst-converter.html
Most people want to convert their OST to PST files without facing any issue then I consider you the highly recommended PassFixer
software. Which can provide the exact result without making any changes or errors. This is a 100% virus-free tool and this tool is able to convert multiple or single folders at the same time without any problem. That can recover damaged OST files and also convert OST files to PST a variety of formats like HTML, MBOX, EML, EMLX, Yahoo, Gmail, Office356, CSV, ICS, etc.
Read More:-Convert OST files to PST
You can use this eSoftTools OST to PST Converter Software that is a very helpful solution to easily make the conversion task of OST file into PST. It never harms the internal data of the OST file during the recovery and conversion process. It is one of the best tools that nicely restore all mailbox items from corrupt OST file database and save them to PST, EML, MSG, EMLX, HTML, vCard, CSV, MBOX, and another file format.
Read More:- Convert OST to PST file