Mac OLM tool
vMail OLM to PST Conversion can be done by manually as well as by using conversion tools. But manual methods are a bit complicated, and might turn out to be very tedious if a lot of data needs to be converted. Also the procedure must be done properly as otherwise it may even corrupt the OLM file.
In contrast, using conversion tolls like OLM to PST Converter can be very useful as such tools don’t require any pre-requisite technical knowledge and can convert large OLM files into file of various formats like PST< MBOS, EML or MSG. Hence Professionals always recommend using such tools.
Know more info- https://www.vsoftware.org/olm-to-pst-converter.html
Kelly Lasner commented
You can also use GainTools OLM Converter Software to move Mac OLM data files to numerous saving formats, including PST, MSG, MBOX, EML, EMLX, and so on. In addition, this tool has a batch superior that allows users to export some Mac OLM folders into the appropriate format at once. Feel free to use this well-known utility, which is practical by both technical and non-technical people.