Received a marketing message over PM

Hi,

Yesterday I received a marketing email for a “save 20% when you switch to an annual plan” offer via Discourse. I am usually unsubscribed from marketing emails because they clutter my inbox. Also, I am a paid customer of Workers Pro but not Cloudflare Pro, the former of which doesn’t have a yearly plan yet, so the message is not relevant to me.

It was sent to me over Discourse, and I am wondering why Discourse was used instead of the normal marketing email list. Is there a way to unsubscribe from these specific marketing PMs, in case they continue to occur in the future? I believe PMs should be used for important private messages between users, not as a channel for general marketing. Thanks.