Outlook Email Broken Layout Fix: Resolve Custom Font Fallback Overrides for WCAG Accessibility Violations
Accessibility failures prevent screen readers from navigating templates, isolating disabled subscribers and increasing unsubscribe rates. Below is the targeted integration guide to fix Custom Font Fallback Overrides inside Outlook 2016 templates when using MJML Framework.
Technical Breakdown
Outlook 2016 does not support Google Fonts. If fallback fonts are defined, MSO overrides the entire family chain to Times New Roman, ignoring Arial or sans-serif fallbacks.
MJML Framework Behaviors
The MJML transpilation compiler parses dynamic columns and wraps them in custom HTML conditional tags. If you paste direct tables or VML code blocks inside an MJML layout without proper escaping, the MJML compiler will try to clean the code, resulting in stripped Outlook namespaces and broken layouts. Inject correct table roles (role='presentation') and keep color pairings above the WCAG AA contrast threshold of 4.5:1.
Remediation Code Block
To prevent Outlook's Times New Roman fallback override, wrap your custom font declarations inside an @media block that Outlook ignores, or use MSO conditional statements to override font-families specifically for Microsoft Word rendering engines. In your MJML Framework campaign manager, make sure you configure your links to run via {{unsubscribe_link}}.
<!--[if mso]>
<style type="text/css">
body, table, td { font-family: Arial, sans-serif !important; }
</style>
<![endif]-->
<style>
@import url('https://fonts.googleapis.com/css2?family=Montserrat&display=swap');
</style>Live Code Sandbox Test
How to Deploy inside MJML Framework
Copy the fixed VML or table wrapper code block from the remediation box above.
Wrap the entire RenderOps corrected table block inside an '<mj-raw>' tag block. This tells the MJML compiler to bypass parsing on this segment, exporting the exact conditional statements into the final HTML output.