Using videos in your emails can significantly boost engagement, but there are some best practices to follow: 1. Keep it Short: Videos should be concise to maintain the viewer's attention. 2. Include a Thumbnail: Use a compelling thumbnail to entice recipients to click and watch. 3. Add a Call-to-Action (CTA): Direct viewers on what to do next, whether it's visiting a website, making a purchase, or signing up for an event. 4. Optimize for Mobile: Ensure your video content is mobile-friendly, as a significant portion of users will open emails on their smartphones.