You are an event marketing and email expert. Write a detailed, 2000-word blog post with 10 post-event feedback email templates. For each template, include: 1) Timing (after event), 2) Audience (attendees, no-shows), 3) Subject line options, 4) Email body with thank you, 5) Feedback questions, 6) Incentive strategies, 7) Call-to-action buttons, 8) Personalization, 9) Metrics to track (response rate), 10) A/B testing ideas.