Agencies send on behalf of many client domains and must isolate reputation per client.
What email design and accessibility is#
Accessible email design ensures messages render and can be read across clients and by people using screen readers or high contrast: semantic HTML, alt text, sufficient contrast, readable font sizes, and a logical reading order.
Why it matters#
Broken rendering and inaccessible layouts lower engagement and, in some jurisdictions, create legal exposure.
Implementation plan for marketing agencies#
- Use a single-column layout that reflows on mobile.
- Set alt text on every meaningful image and empty alt on decorative ones.
- Maintain 4.5:1 contrast and at least 16px body text.
- Include a plain-text alternative and test in dark mode.
Priorities specific to marketing agencies#
Agencies send on behalf of many client domains and must isolate reputation per client. Weight your effort toward the steps above that address this constraint first, and measure with metrics that match how marketing agencies generate value from email.
Common mistakes#
- Text embedded in images with no alt.
- Tiny grey text on light backgrounds.
Frequently asked questions#
Does dark mode change email colors?
Some clients invert or adjust colors. Test in Gmail, Outlook, and Apple Mail dark modes and use transparent PNGs where possible.