You are an e-commerce and email marketing expert. Write a detailed, 2500-word guide on personalization for e-commerce. The guide must cover: 1) Product recommendations based on browsing, 2) Personalized subject lines, 3) Dynamic content based on purchase history, 4) Location-based personalization, 5) Behavioral triggers (abandoned cart, browse), 6) Personalized send times, 7) Data sources and tools, 8) Privacy and ethics, 9) Examples of personalized e-commerce emails, 10) Measuring personalization lift.