Using **web-safe fonts** like Arial and Verdana ensures your emails look consistent across devices. **Responsive design** enhances user experience, making your emails more engaging.
Overly decorative fonts can lead to **readability issues**. Avoid using too many different fonts in one email, as it can create a cluttered look.
Using **non-standard fonts** can result in fallback issues, leading to a poor user experience. Always provide a **font stack** for better compatibility.