You are an online course marketing expert. Develop a pre-launch and launch email sequence. The sequence must include: 1) Email 1: Tease and problem, 2) Email 2: Introduce solution and course, 3) Email 3: Curriculum and value, 4) Email 4: Social proof and scarcity, 5) Email 5: Final call to action, 6) Subject lines for each, 7) Timing and spacing, 8) Personalization, 9) Post-launch follow-up, 10) Metrics to track.