migrate on-prem exchange public folders to M-Files

If this is a one-off migration, I would look for ways to export the data out to disk first and then import it to M-Files using for instance M-Files Importer. Depending on the export format and the desired end result in M-Files, you may need to do some modifications and conversions of the files before importing them. For instance, you may want to extract the project information and tag it as M-Files metadata during the import.