Why Some Fonts May Not Appear the Same Everywhere

When designing your email templates, you can use both standard system fonts and custom web fonts (like Montserrat, Poppins, etc.).
However, not all email clients support loading fonts from the web — so the appearance may vary depending on the recipient’s email app.

These fonts are called web-safe fonts, because they’re pre-installed on most devices and email clients.
They always render correctly in Gmail, Outlook, Apple Mail, Yahoo, etc.

✅ Best Practice:
Always include one of these as a fallback for your custom font, for example:

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

Web fonts (like Montserrat, Poppins, or Roboto) are loaded from the internet (via Google Fonts or custom URLs).
They help maintain brand identity, but email client support is limited.

📌 What happens if not supported?
The email client automatically uses the next fallback font (for example, Arial or Helvetica).

• Use your preferred custom font for brand identity (e.g., Montserrat).

• Always define a fallback web-safe font to ensure consistent readability.

• Keep important content (like headers or CTAs) clear even if fallback font is used.

• Avoid using web fonts for critical size-dependent designs — spacing may shift slightly.

<p style="font-family: 'Montserrat', Arial, sans-serif;">
  Welcome to our newsletter!
</p>

If the recipient’s email client supports web fonts, it’ll display in Montserrat.
Otherwise, it’ll automatically display in Arial — maintaining similar appearance.

This limitation applies to all email systems globally — not specific to MSG91 or Stripo.
Support for web fonts depends entirely on the recipient’s email client.