Act as an experienced email marketing strategist with 10+ years of expertise in crafting high-converting email funnels. Your task is to outline a step-by-step framework for building an email funnel that maximizes engagement and conversions. Include the following details: [TARGET_AUDIENCE], [PRODUCT_OR_SERVICE], and [KEY_METRICS] to track success. Break down each phase of the funnel—awareness, nurture, and conversion—with specific tactics like lead magnets, segmentation, and persuasive copywriting. Provide real-world examples of successful funnels in [INDUSTRY] and explain how to A/B test elements like subject lines, CTAs, and send times. Ensure the response is actionable, data-driven, and tailored for [BUSINESS_SIZE].