The method of converting OLM files to Outlook PST format is known as OLM to PST migration. Use a package that converts OLM files (which formally support several email clients) to Outlook PST files to make the process simpler.
I would strongly advise you to use this great OLM to PST Converter Software, that allows users to convert single or multiple OLM files into PST format without having to use Outlook. It allows you to store OLM files in a single or multiple PST file. Exports the OLM file to a variety of file types including EMLX, MSG, PST, MBOX, EML, HTML, and PDF.
It displays a sample of convertible olm files before converting them to pst, allowing you to convert olm files into pst and other formats selectively. This tool can be used by both technical and non-technical people without any technical knowledge. Check out this free trial edition, which allows users to see a preview of all convertible data and verify its functionality and features.
Click here https://www.softmagnat.com/olm-to-pst-converter.html to know more about this software