Responsive Design: Use fluid grids and flexible images to ensure your layout adjusts to different screen sizes. Media Queries: Implement CSS media queries to apply specific styles for different devices. Mobile-Friendly Fonts: Opt for readable font sizes and styles that look good on smaller screens. Single-Column Layout: Simplify your email design by using a single-column layout, which is easier to read on mobile devices. Clickable Elements: Ensure buttons and links are large enough to be easily tapped on touchscreens.