Email Markup Consortium: “This report serves as a technical audit of the senders, platforms and email clients that define the modern inbox. The results below are from analysis of over 376,000 emails across senders and geographies, looking at how each email scored on a detailed accessibility scorecard. This year’s report also looks beyond the sender, including views of widely used newsletter platforms with built-in email build/authoring tools. The 2026 Email Accessibility Report reveals an industry at a technical standstill. Despite a marginal uptick, the email ecosystem remains in a state of systemic failure: 99.88% of the 376,348 emails analyzed this year contain ‘Serious’ or ‘Critical’ accessibility defects, leaving only a 0.002% pass rate represented by just eight emails from three brands. In this year’s report, we are also looking beyond the sender and at widely-used newsletter platforms with built-in email build/authoring tools.

• We audited 10,566 emails sent via Substack, Shopify and Beehiiv. None passed our automated testing. When it comes to email clients, we have taken a deeper look this year, nearly doubling our email client accessibility criteria from 20 to 37 feature benchmarks. The data is clear: a major reason why accessibility is failing in email is a lack of implementation…”