email-accessibility
Email Accessibility Skill
Reference data for HTML email accessibility under email client rendering constraints. Used by email-accessibility agent.
Email Client Rendering Constraints
Email HTML operates under severe constraints compared to web browsers:
| Feature | Gmail | Outlook (Win) | Apple Mail | Yahoo | Outlook.com |
|---|---|---|---|---|---|
Semantic HTML (<nav>, <main>) |
Stripped | Stripped | Supported | Stripped | Stripped |
role attributes |
Stripped | Stripped | Supported | Stripped | Stripped |
aria-* attributes |
Stripped | Stripped | Supported | Stripped | Stripped |
<style> blocks |
Supported | Supported | Supported | Supported | Supported |
| External CSS | Stripped | Stripped | Stripped | Stripped | Stripped |
| JavaScript | Stripped | Stripped | Stripped | Stripped | Stripped |
| CSS Grid | Supported | Not supported | Supported | Supported | Supported |
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