Dark Mode Email Preview
Approximately 35-50% of users open emails in Dark Mode. Ensure your newsletter looks professional by testing color inversions and image transparency here.
📖 How to Optimize for Dark Mode
Check Transparency
Ensure your logo and icons are transparent PNGs. Avoid white boxes around images that look "broken" on dark backgrounds.
Add Strokes
If your logo is black, add a subtle white stroke or outer glow so it remains visible when the background turns dark.
Test Contrast
Check that your call-to-action buttons have enough contrast. Some automated inversions can make button text unreadable.
Use Meta Tags
Add <meta name="color-scheme" content="light dark"> to your HTML to signal that your email supports both themes.
💡 Dark Mode Rendering Explained
Different email clients handle dark mode in three distinct ways. This tool allows you to simulate these environments to prevent your design from "breaking."
- No Changes: Some clients (like Apple Mail on Desktop) simply change the UI around the email but leave your HTML colors exactly as you defined them.
- Partial Inversion: Clients like Outlook.com only invert backgrounds that are light, but keep dark text dark, often leading to poor contrast.
- Full Inversion: Gmail (Android/iOS) and Outlook (iOS/Android) are the most aggressive. They invert both backgrounds and text colors to ensure a dark experience for the user.
To truly master Dark Mode, use the @media (prefers-color-scheme: dark) CSS media query in your <style> block to manually define your dark theme colors.