Email List Hygiene & Sunset Policy Checklist

### Continuous Operational Hygiene - [ ] Hard bounces (SMTP 550 errors) automatically suppressed immediately. - [ ] Spam complaints automatically suppress the contact across all marketing workflows. - [ ] Unsubscribe requests processed synchronously in real-time (within 0 seconds). ### The 60-Day Sunset Automation 1. **Trigger:** Contact has not opened or clicked an email in 60 days. 2. **Action 1:** Exclude from all general marketing and promotional broadcasts. 3. **Action 2:** Send Email 1: "Are we still adding value?" with a single one-click button: [Yes, keep me subscribed]. 4. **Action 3 (If no click after 5 days):** Send Email 2: "Final notice: Removing you from our list to respect your inbox." 5. **Action 4 (If no click after 48 hours):** Automatically apply tag `Status: Sunset-Suppressed` and archive record.