To convert OLM to PST without any data loss, I would advise using an excellent vMail
OLMconverter tool for Mac. It is beneficial to convert OLM files in bulk to PST while maintaining the folder structure. By utilizing the Date Range filter,
it is possible to convert only specific emails. The OLM converter maintains
data security throughout the conversion process and deletes any comparable
emails. Using this Software, Mac users can convert OLM files to more than 20
different file formats and email applications.
Know more info-
https://www.vsoftware.org/blog/methods-to-convert-outlook-olm-to-pst.html
