Fonts and external resources can add to the load time if not managed properly. Here's how to handle them:
Web-Safe Fonts: Stick to web-safe fonts like Arial, Verdana, or Georgia to avoid loading external font files. Inline Fonts: If you must use custom fonts, consider inlining them using base64 encoding to minimize HTTP requests. Reduce External Resources: Avoid linking to external stylesheets or scripts. Inline CSS is usually sufficient for most email designs.