Here are some best practices to ensure rendering consistency:
Use Inline CSS: Many email clients strip out or ignore embedded or external CSS. Inline CSS is more widely supported. Test Across Platforms: Use tools like Litmus or Email on Acid to test your emails on multiple clients and devices. Optimize for Mobile: Use responsive design techniques to ensure your email looks good on all screen sizes. Fallbacks for Fonts: Always include fallback fonts in your CSS to ensure text remains legible. Alt Text for Images: Include descriptive alt text for images in case they are blocked or fail to load.