Update site member record after an unsubscribe happens

Your newsletter members may still be marked subscribed after an unsubscribe, causing accidental sends and complaints. This updates member status in your site so you stop sending to opted-out users within minutes.

Overview

When subscribers opt out, the site must reflect that immediately to avoid accidental sends and complaints. This flow flips the on-site subscription off, logs the reason, and notifies the list owner so newsletter ops stop outreach within minutes.