Limiting emails sent per day to a domain

Would be great to have a way to automatically limit the number of emails that will go to domain i.e., @company.com per day.  For example, you could select to "send" all emails at the same time but the system would only allow X per day to be sent to an @company.com email address.  This would really make it easier to send to multiple people in a company without blasting them with the same email at the same time.