Test email HTML for screen reader compatibility, alt tags, color contrast, heading structure, and link text quality.
Paste email HTML and click "Run accessibility check" to see results.
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Over 1 billion people worldwide live with some form of disability. Inaccessible emails exclude a significant portion of your audience, leading to lost engagement and revenue. Beyond the business case, many countries have legal requirements for digital accessibility. Making emails accessible also improves the experience for everyone, including people using voice assistants, reading in bright sunlight, or on slow connections.
The most common issues include: missing alt text on images (screen readers cannot describe them), poor color contrast between text and background (hard to read for low-vision users), generic link text like "click here" (meaningless out of context for screen reader users who navigate by links), skipped heading levels (breaks document structure for assistive technology), and missing language attribute (screen readers may mispronounce content).
WCAG (Web Content Accessibility Guidelines) is the international standard for digital accessibility, published by the W3C. While WCAG was designed for websites, its principles apply directly to HTML emails. Key requirements include a minimum 4.5:1 contrast ratio for normal text, meaningful alt text for images, proper heading hierarchy, and descriptive link text. Most accessibility laws reference WCAG 2.1 Level AA as the compliance standard.
Screen readers like NVDA, JAWS, and VoiceOver parse HTML emails similarly to web pages. They read content linearly, announce images using alt text, navigate via headings and links, and interpret table structures. However, email clients often strip or modify HTML, which can break accessibility features. Using semantic HTML, role="presentation" on layout tables, proper heading hierarchy, and descriptive link text ensures the best screen reader experience across all email clients.
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