The OLM Converter Software offered by MacSonik is one of the finest utilities to import Mac Outlook OLM files to Office 365. The software allows users to add or upload multiple OLM files to Microsoft 365 accounts. Apart from this, the tool allows the user to convert their OLM file into various file formats like PDF, EML, MSG, CSV, MBOX, etc. The tool is compatible with macOS 10.13 High Sierra, macOS 11 Big Sur, macOS 12 Monterey, macOS 13 Ventura, macOS Sonoma, and later versions of macOS (10.15 “Catalina”).