Short answer:
Use standard system fonts (e.g. Arial, Calibri, Helvetica, Aptos) with fallback fonts to ensure consistent display across all email clients.
Explanation
Email clients do not consistently support web fonts. To ensure your email signature displays correctly for all recipients, you should use standard Windows and Mac fonts.
Custom fonts will only display if they are installed on the recipient’s device. If not, a fallback font will be used instead.
Xink includes commonly used fonts with built-in fallback options, so your signature remains consistent across platforms.

Recommended fonts
- Arial (Windows & widely supported)
- Calibri (Classic Outlook default)
- Aptos (New Outlook default font)
- Helvetica (Mac)
- Verdana
- Tahoma
Example with fallback fonts
Use a standard Windows font with a Mac fallback to ensure compatibility:
Example: Arial (Windows) with Helvetica (Mac fallback):
<font face="Arial, Helvetica, Sans-Serif" color="#000000" style="FONT-SIZE: 10pt"> Arial 10pt (Win) or Helvetica 10pt (Mac) </font>
You do not need to edit HTML when using the Xink font menu, as fallback fonts are automatically applied. Advanced users can modify this in the HTML source if needed.
Summary
- Email clients do not reliably support custom web fonts
- Use standard fonts like Arial, Calibri, Helvetica, or Aptos
- Always include fallback fonts for cross-platform compatibility
