I see the document for ACC has details for capacity rules, but what about ACS? Is there only the option for fatigue, which would be at the recipient level and not an overall email send cap per day? I have a request to cap the amount of unique deliveries being sent per day. Before we go down a different path to make this happen, is there a built in mechanism to replicate the capacity functionality from ACC?
You will need to set up supporting customer schemas and workflows to capture the delivery runs for the day; these workflows will act as a gateway to how many and which deliveries need to be let through based on the customer's settings.