**Verification checklist — writing, high stakes (10 checks):** *Factual accuracy* 1. **Prices.** Verify $18 and $24 against the live billing system, not the planning doc. How: manual check in billing admin. Red flag: numbers from an early draft, not the final decision. 2. **Effective date.** Confirm September 1 is when billing actually flips. How: ask the billing owner. Red flag: email commitments ahead of the system date. 3. **Grandfathering terms.** "Locked until your next annual renewal" — confirm this is the approved policy and applies to monthly subscribers. How: check the pricing decision doc. Red flag: annual-plan language sent to monthly plans. *Logical consistency* 4. **"Your rate is locked" vs "new pricing applies automatically."** These can contradict. How: read as one recipient per segment; split if segments differ. 5. **"No action is needed."** True only if no segment must act to keep its rate. How: enumerate subscriber states and check each. *Alignment with intent* 6. **Tone vs goal.** If the goal is retention, the draft offers no value justification for the increase. How: compare against the comms brief. *Edge cases* 7. **Mid-cycle, trialing, legacy-plan, non-USD subscribers.** How: query each segment and confirm its terms. Red flag: "$" amounts sent to non-USD customers. 8. **Merge field {first name}.** Confirm a fallback for empty names. How: check the template. Red flag: "Hi ," in inboxes. *Ethical / legal* 9. **Notice period.** Does September 1 satisfy the minimum notice your terms or consumer law require? How: legal review before send. *Sample test* 10. **Seed send** to internal addresses covering each segment; reply to confirm routing. How: run. **Load-bearing claims:** (1) the grandfathering promise — if billing charges locked users $24, this email becomes a documented broken commitment; (2) the September 1 date — every other statement inherits its correctness from these two.