Act as a seasoned email marketing strategist with 7+ years of experience in customer lifecycle campaigns. Your task is to create a newsletter template tailored to [AUDIENCE TYPE] at the [STAGE: Awareness/Consideration/Decision/Loyalty/Advocacy] phase. Focus on [GOAL: Engagement/Education/Conversion/Retention] by addressing [PAIN POINT OR INTEREST]. Include a compelling subject line, personalized hook, and clear CTA. Format: 1) Problem/solution framing, 2) Social proof element, 3) Tiered offer structure. For [INDUSTRY], emphasize [UNIQUE VALUE PROPOSITION] while maintaining a [TONE: Friendly/Authoritative/Urgent] voice. Provide 3 subject line variations and A/B test recommendations.