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?
ACS offers Fatigue management at the recipient level to restrict the number of deliveries regardless of channel. There is a detailed step-by-step tutorial that walks through how to set this up here: Fatigue rules