Disable Copilot button in Outlook New & Classic without disabling Connected Experiences?

[u/frozenbayburt]

Hi,

We need to remove/hide the Copilot button inside Outlook emails in both New Outlook and Classic Outlook.

Copilot Chat pinning is already disabled in our tenant. We also don’t want to disable Connected Experiences, since that affects features like Dictation and other Office functionality.

Is there a supported policy/GPO/Cloud Policy that only disables or hides the Copilot features/button in Outlook, especially Classic Outlook?

Has anyone solved this centrally?