I would like to recommend Kernel for OST to PST Converter that offers advanced features like email filtering, selective folder conversion, and support for encrypted and password-protected OST files.https://www.nucleustechnologies.com/ost-to-pst-converter.html

Now convert the OST file into a PST file without losing the data. A tool like Aryson OST to PST converter tool helps to convert the OST file into multiple file formats like HTML, MHTML, JPEG, GIF, DOC, TIFF, etc. This tool also helps to transfer the OST file to multiple mail clients like Thunderbird, Office 365, Gmail, etc. It also helps to convert single and multiple OST files at the same time.

To know more: - https://www.arysontechnologies.com/convert-ost-to-pst-online.html

The best and most effective method for converting OST files to PST is eSoftTools OST to PST Converter software, which provides secure OST file recovery with only a few mouse clicks. You can use a variety of features, including:
1. Convert OST to multiple files formats like MBOX, CSV, EML, MSG, vCard, HTML, and PST Outlook .
2. During conversion, a smart preview is shown to ensure safe recovery.
3. Converting files would not require the installation of Microsoft Outlook.
4. Also convert OST to Office 365.
5. A FREE DEMO pack is available up to 25 emails can be converted from each OST folder.

Get more info- https://www.esofttools.com/ost-to-pst-converter.html