Email marketing is a powerful tool for event planners for several reasons: 1. Cost-Effective: Compared to traditional marketing methods, email marketing is highly cost-effective. 2. Targeted Messaging: Segmentation allows planners to send tailored messages to specific groups, enhancing engagement. 3. Measurable Results: Analytics tools provide detailed insights into open rates, click-through rates, and conversion rates. 4. Instant Communication: Emails can be sent quickly, making it easy to share last-minute updates or urgent information.