If you want to move your Mac Outlook emails into Windows Outlook without losing formatting. So, I recommend that you try a reliable solution like
SameTools to Convert OLM to PST. This software is able to safely convert OLM to PST format. It also preserves email structure, formatting, and attachments. Plus, it is quick & easy: just create a list of their OLM files, select PST as the output format, and convert. When complete, users can simply import the PST to Windows Outlook without loss of data or changes to the email layout. It also has a user-friendly interface for users with and without technical skills, which is a bonus. Moreover, test the Free Demo now – designed for Windows OS and all Outlook versions.