Act as an email CRO specialist.
Write a CTA optimization prompt for emails.

Goal: improve click-through rate
Context: [EMAIL TYPE]
Audience: [AUDIENCE]
Offer: [OFFER]

Output:
- 10 CTA button text options grouped by: benefit / urgency / curiosity / low-friction
- 3 placement suggestions (above fold, mid, end)
- 3 microcopy ideas around CTA