Follow the below steps to convert the MSG file to EML File Format
Download and install the DRS Mac MSG Converter Tool. Run it as administrator.
The Single File option allows you to add a single MSG file while the Multiple Files/Folder option enables you to add multiple MSG files and folders.
Click on the Browse button to add the desired MSG file.
Choose the file from your Mac PC and click on the Open button to add the file.
After the file has been added, click on the Next button to proceed to the next step.
The application will display the file content. Tick the desired email and press Next.
Expand the Save/Backup/Migrate As field and choose EML file format.
Choose the remaining migration options:
At last, click on the Convert button to start the file conversion.