Update contact unsubscribe status after digest list removal

Your digest list unsubscribes aren't reaching contact records, leaving lists with stale addresses and risking accidental sends. This updates subscription flags and logs changes before the next send.

Overview

Stop accidental sends to unsubscribed recipients by closing the gap between list removals and contact records. This flow records each unsubscribe and updates contact subscription fields within minutes, helping campaign managers avoid mistakes before the next campaign send window.