5 Common Design Mistakes That Make Emails Unreadable on Mobile
Small font sizes, crowded buttons, and wide images can ruin your email experience on phones. Learn how to make your templates look great on any mobile screen size.
More than 60% of all emails are opened on smartphones. If your template looks great on a desktop monitor but becomes unreadable on a phone, you lose sales and engagement.
Here are 5 common mobile email design mistakes to avoid:
1. Tiny Font Sizes
Body text that looks fine on a desktop screen becomes illegible on mobile.
- Rule: Set body text to at least 14px to 16px for easy reading.
2. Small, Crowded Touch Targets
If buttons are too small or placed too close together, mobile users will accidentally tap the wrong link.
- Rule: Buttons should have a minimum height of 44px with clear padding around them.
3. Excessive Horizontal Margins & Padding
Dense side padding wastes valuable screen width on small mobile displays. Use compact side padding (16px to 20px) on mobile layouts.
4. Heavy Uncompressed Banners
Large uncompressed image files load slowly on cellular data networks. Always compress images to under 150KB before sending.
5. Lack of Clear Visual Hierarchy
Use bold section titles, high-contrast CTA buttons, and clean spacing to make your email easily scannable in 5 seconds.
Ready to design high-converting emails?
Use Emailnya's free drag-and-drop visual email builder to export responsive HTML, MJML, or send directly through standard Gmail.