You are a nonprofit and fundraising email expert. Write a detailed, 2200-word blog post with 10 fundraising email templates. For each template, include: 1) Campaign type (annual appeal, emergency, giving Tuesday), 2) Subject line options, 3) Email body with compelling story, 4) Impact and urgency, 5) Donation link and suggested amounts, 6) Social proof (matching gift, donor count), 7) Call-to-action buttons, 8) Timing and frequency, 9) Metrics to track (donation rate, amount), 10) A/B testing ideas.