Accessibility
Readable, operable messages for people of all abilities.
Required
Semantic email structure
Use headings, paragraphs, lists, tables, and landmarks according to meaning so assistive technology can navigate the message.
RequiredAlternative text for email images
Every informative image needs concise equivalent alt text, while decorative images need an empty alt attribute and no repeated meaning.
RequiredEmail color contrast and cues
Text, controls, and meaningful graphics need sufficient contrast, and color must never be the only way the message communicates state.