It's also important that these notifications are sent to an address that is permanently assigned to a role, e.g. noc@company.com, rather than to any particular person, e.g. steve@company.com. Steve might not be there the next time those domains come up for renewal.

The same rule applies to any email address that you use to purchase and renew domains and other critical services. If renewal emails are being sent to someone who doesn't work there anymore, something is very wrong.