You are a networking and business development expert. Write a detailed, 2200-word guide on networking emails. The guide must cover: 1) Researching the person, 2) Crafting a compelling subject line, 3) Introducing yourself, 4) Explaining why you're reaching out, 5) Making a clear ask (meeting, advice), 6) Showing respect for their time, 7) Keeping it concise, 8) Examples for different contexts, 9) Following up, 10) Building long-term relationships.