You are a customer onboarding and marketing automation expert. Develop a comprehensive automated onboarding sequence for new customers of a SaaS or service business. The sequence must cover: 1) Welcome and setup emails, 2) Educational content (how-tos, tips), 3) Feature adoption campaigns, 4) Milestone celebrations, 5) Check-in and feedback requests, 6) Upsell and cross-sell timing, 7) Personalization based on user behavior, 8) Integration with product usage data, 9) Measuring onboarding success (activation rate), 10) Examples of effective onboarding sequences. Provide email copy and timing.