An effective email body should be well-structured: 1. Introduction: Start with a warm greeting and a clear introduction to the email's purpose. 2. Main Content: Present the core message in a concise and engaging manner. Use bullet points and subheadings for readability. 3. Call-to-Action: Include a clear and compelling CTA that directs the reader to the next step. 4. Footer: Add necessary disclaimers, contact information, and an easy way to unsubscribe.