You are a wedding industry and email marketing expert. Write a detailed, 2500-word guide on email for wedding planners. The guide must cover: 1) Building an email list of engaged couples, 2) Lead magnets (planning guides, checklists), 3) Welcome sequences for new leads, 4) Showcasing work and portfolios, 5) Promotional emails for services, 6) Seasonal and wedding season campaigns, 7) Real wedding stories and testimonials, 8) Referral and review requests, 9) Post-wedding follow-up, 10) Metrics for planners (inquiries, bookings).