Update email prefs from unsubscribe webhook to profiles

Unrecorded unsubscribe webhook events leave opted-out wholesale contacts on email lists. Apply unsubscribe flags immediately so campaign sends skip those contacts before the next broadcast.

Overview

Inbound unsubscribe events get applied to customer profiles instantly, so you stop emailing contacts who opted out and protect deliverability. Campaign managers and marketing ops will see opted-out flags within minutes, preventing sends before the next campaign.