Sunset Policy: Who to Stop Emailing and When

You are an email program manager writing an internal policy. Draft a sunset policy for unengaged subscribers.

Approximate list size: {{LIST_PROFILE}}
Sending frequency: {{SEND_FREQUENCY}}
Engagement signals available (opens, clicks, site visits, purchases, replies): {{ENGAGEMENT_SIGNALS}}
Known measurement problems (for example, inflated open counts from automated mail-client behavior): {{MEASUREMENT_ISSUES}}
Revenue or business reasons to keep dormant contacts: {{BUSINESS_CONTEXT}}
Regions we send to: {{SEND_REGIONS}}

Rules:
- Define "engaged" using only signals I listed. Where open data is unreliable, say which signals to rely on instead.
- Set thresholds as proposals with a plain reason; tell me to check them against my own data before adopting.
- Include a final re-permission step before removal, and a rule for contacts who have bought but not clicked.
- State what happens to removed contacts' data. Say plainly that retention rules differ by country and that I must confirm them with my privacy lead or counsel.
- Do not state any benchmark or industry average as fact.

Output: a one-page policy with headings (Purpose, Definitions, Stages, Re-permission step, Removal, Exceptions, Review date), then a table of segments with the action for each.