No, a user is not allowed to use this application on Mac OS as it is a OLM File Viewer for Windows platform.
No, the OLM File Reader does not impose any file size limitation. It open and view OLM file of any size without any hassle using this tool.
Yes, the software is capable enough to open and read OLM file of both Mac Outlook 2011 and Mac Outlook 2016.
Yes, OLM File Reader software is designed with a high-tech algorithm, so it maintains the folder hierarchy OLM file.