A font isn't just a visual element.It shapes how you're perceived:

  • serious or frivolous,
  • modern or dated,
  • comfortable or annoying.

Font choice is especially important in email design, because:

  • email clients have limited support,
  • text needs to be readable on both mobile and desktop,
  • the font affects open rate, click-through rate, and trust.

In this article — how to choose the right font for your emails without ruining the impression.

Which fonts work in email?

System fonts (supported everywhere)

This is a safe choice if maximum compatibility matters to you:

Font

Where it works

Arial

everywhere

Verdana

everywhere

Georgia

everywhere

Tahoma

everywhere

Times New Roman

everywhere

Trebuchet MS

everywhere

Courier New

everywhere

Pros:+ Fast loading+ Reliable in Outlook, Gmail, and Apple Mail

Cons: — Don't always look "unique"

Can you use Google Fonts?

Yes, but with caution.

What matters:

  • Gmail and Outlook don't always support external fonts.
  • Some email clients ignore @import and @font-face.

If you use Google Fonts, always specify a fallback:

font-family: 'Roboto', Arial, sans-serif;

Tip: even if the brand uses custom fonts on its website, it's better to use their system-font equivalents in emails.

What font size should you choose?

For mobile:

  • Headings: 22-26 px
  • Body text: 16 px (no smaller than 14 px!)

For desktop:

  • Headings: 24-30 px
  • Body text: 16-18 px

⚠ If the text is too small, people simply won't read it.

How to pair fonts?

Use 1-2 fonts max:

  • One for headings (can be more expressive),
  • One for body text (as readable as possible).

Example of a good pairing:

  • Heading: Georgia
  • Body text: Arial

How to set a font in Letteros?

In the editor:✅ Select the block you need (heading, text, button)✅ In the panel on the right, set:

  • font,
  • size,
  • color,
  • line spacing.

You can also save your brand style in a master template, so you don't have to set it manually every time.

Common mistakes

❌ Using more than 3 fonts in one email❌ Small text (below 14 px)❌ Light gray text on a white background❌ Using custom fonts without a fallback

Conclusion

The right font = readability + trust + conversion.Try not to overcomplicate things: a simple font, good contrast, mobile adaptation — and your email works toward the result.