Question 1

How do I use custom fonts in emails?

Accepted Answer

Custom web fonts (Google Fonts, Adobe Fonts) can be loaded in emails using @font-face or @import in the style tag. However, Outlook Windows, older Gmail, and Yahoo Mail do not support external font loading. You must always define a fallback font stack so these clients display a similar-looking system font instead.

Question 2

What is an email font stack?

Accepted Answer

An email font stack is a comma-separated list of fonts in the CSS font-family property, ordered from preferred to generic fallback. Example: font-family: Inter, Helvetica Neue, Arial, sans-serif. If Inter fails to load, the client tries Helvetica Neue, then Arial, then the default sans-serif.

Question 3

Which fonts are safe to use in emails?

Accepted Answer

Email-safe system fonts that render consistently across clients include: Arial, Helvetica, Times New Roman, Georgia, Courier New, Verdana, Trebuchet MS, and Tahoma. For modern aesthetics, Helvetica Neue and system-ui are good cross-platform choices. The Font Builder generates stacks with the closest-matching system font fallbacks to your preferred custom font.

Question 4

Do Google Fonts work in emails?

Accepted Answer

Google Fonts work in Apple Mail, iOS Mail, Outlook for Mac, and some webmail clients via @import. They do NOT work in Outlook for Windows 2013-2021, older Gmail, and Yahoo. Always define a font-stack fallback. The Font Builder generates the @font-face code plus the complete fallback stack for any Google Font.

Email Font Stack Generator Free