For exporting G Suite to MSG, I would suggest the MacSonik Google Workspace Backup Tool. This tool successfully saves G Suite into MSG, PDF, PST, MBOX, EML, and other file formats. As well as converts them into Office 365, Gmail, Yahoo Mail, and more. This software migrates your G Suite data into a different format without any errors and saves all email files with attachments within a single process.

Here are the simple steps to export G Suite to MSG:

1. First, download and install the G Suite Backup Tool on your Mac System.
2. Choose the option Backup Google Workspace Emails only.
3. Enter your Google Workspace email ID and password, then click Sign In.
4. Select the user account you want to export emails from.
5. Click the Continue button under the File Formats section.
6. Choose the MSG from the drop-down menu.
7. Pick a folder on your computer to save the MSG files.
8. Finally, click the Convert button to start exporting your G Suite emails to MSG format.