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Introducing the Font Stack Builder for Email

Nicki Pabst
Nicki Pabst
Co-founder & Email wizard

We've just launched a new free tool that solves one of email development's most frustrating problems: font fallbacks.

The Problem​

You spend hours choosing the perfect font for your email campaign. You implement it carefully. And then half your subscribers see Arial anyway.

Why? Because email clients have wildly different font support, and most developers don't know which fonts actually work where.

The Solution​

Our new Font Stack Builder helps you create bulletproof font stacks that look great across all email clients.

Here's what makes it different:

  • 900+ Outlook fonts: Outlook supports way more fonts than most people realize. We've catalogued all of them.
  • Gmail's hidden fonts: Gmail has a list of supported fonts that almost nobody knows about. We've painfully tested every single one.
  • Visual comparison: See exactly how your font stack renders in Gmail, Outlook, Apple Mail, Yahoo, and Thunderbird.
  • Instant code: Copy the perfect font-family CSS with one click.

How It Works​

The tool guides you through a simple process:

  1. Choose whether your font is serif or sans-serif
  2. Select your custom font (or upload your own)
  3. Pick the closest Outlook fallback
  4. Choose your web-safe fallback
  5. See the results across all major email clients

No guesswork. No surprises. Just fonts that work.

Why We Built This​

After 8 years of email development, we got tired of explaining to clients why their beautiful custom fonts weren't showing up in Outlook or Gmail. We built this tool to make that conversation visual, educational, and actually useful.

Now you can show clients exactly what will happen, build a proper fallback stack together, and deliver emails that look great everywhere.

Try It Now​

The Font Stack Builder is completely free and requires no signup.

Launch the tool →

Questions or feedback? Let us know what you think.