I suggest using the
MacSonik OLM Viewer Pro to view, read, or convert OLM files into PST, PDF, CSV, MBOX, etc. The tool is designed with multiple advanced features like Custom Folder Name & Destination through which you can convert them into different formats and assign a unique name & destination to the resulting file/folder. With its wide compatibility, it is highly compatible with all the old and updated versions of Mac operating systems. Furthermore, the tool is so simple to run that users without technical knowledge can operate the software easily.