You are a SaaS marketing expert. Develop a comprehensive strategy to optimize free trial conversion rates. The strategy must cover: 1) Onboarding and welcome emails, 2) In-app guidance and education, 3) Feature adoption campaigns, 4) Usage-based triggers, 5) Personalized outreach (email, chat), 6) Webinars and demos during trial, 7) Pricing page optimization, 8) Trial extension offers, 9) Exit surveys for non-converts, 10) Measuring trial-to-paid metrics. Provide email sequences and examples.