Responsive Design: Ensure that your email layout adapts to different screen sizes. Use a responsive email design that automatically adjusts the content to fit the screen. Simple Layout: Keep your email design simple and uncluttered. Avoid using too many images or large blocks of text. Readable Fonts: Use larger font sizes (at least 14px) to ensure readability on smaller screens. Single Column Format: A single column layout is easier to read on a mobile device compared to a multi-column format. Touch-Friendly Buttons: Make sure your call-to-action buttons are large enough to be easily tapped with a finger.