Make email notifications optional

When someone invites people to a board (and possibly elsewhere?) they see an item listed in the Teams section “Everyone at ”. If they check that item, everyone in the system for our organization gets an email that they were subscribed to the board. And if the board owner unsubscribes the Everyone item, everyone gets an email that they were unsubscribed. It would be great if there were an option to NOT send an email notification.