Here are some best practices to follow when choosing a font for your email marketing campaigns:
Stick to web-safe fonts like Arial, Helvetica, and Verdana. Use a font size between 14px to 18px for body text. Ensure high contrast between the text and background. Limit the use of different fonts to two or three. Avoid overly decorative fonts that can be hard to read. Test your emails on different devices to ensure readability.