Hi,
Thank you for posting in Microsoft Q&A forum.
Per my experience, there's no default policy available where we can configure Outlook fonts directly from Intune. We can try to use a PowerShell script for this. Similar threads for your reference:
Default fonts and styles for Outlook via Intune
Manage font with Intune in Outlook
Please note: The links are not from Microsoft, just for your reference. Thanks for your time.
Best regards,
Simon
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.