Unsubscribe links are a fantastic regulation, but there
is a workaround. I must have received at least a dozen emails from Brown after graduating despite unsubscribing to every email they sent.
The trouble is they're endlessly creative about the lists they put you on. I'd get one email from "Alumni Connections" and then another from "Faculty Spotlight" and then another from "Global Outreach" and then another from "Event Invitations, 2023 series". I'm making those names up because I forget exactly what they were called, but you get the idea. I hope this was in violation of the regulation: surely you can't invent a new mailing list that didn't used to exist, add me to it, and require me to unsubscribe from it individually.
They finally stopped after I sent them an angry email.