Receiving Calendar Meeting Invitation Responses By Email

I use the native Apple Calendar on my MacBook Pro and iPhone. I successfully use iCloud to sync my calendar between the two devices. I do not have iCloud email switched on.

When I create a meeting and send an invitation to an external party, I would like to receive an email notification (or some other notification) when the recipient accepts or declines my invitation.

Currently, I can only tell if someone has accepted my invitation by opening the calendar meeting item and looking for a green tick beside their name.

Do I need an iCloud email switched on to receive meeting responses via email? Or is there some other way to achieve this?

I appreciate any advice.