For the first time, the 2026 Email Accessibility Report audited newsletter and marketing platforms with built-in email builders.
We analyzed:
• 6,909 @Substack emails
• 2,189 @beehiiv emails
• 1,468 @Shopify Email campaigns
100% triggered at least one automated accessibility failure.
These findings indicate that platform defaults and generated markup have enormous influence over accessibility outcomes at scale.
The 2026 Email Accessibility Report is now live
We analyzed 376,348 HTML emails across industries, geographies and platforms
• 99.88% triggered Serious or Critical issues
• Only 8 emails passed all automated checks
• Most failures were basic, machine-checkable issues
In 2022, we began our Data Collection project with a clear vision for how this data could benefit the ecosystem starting with our annual accessibility reports. Today, we’re excited to announce the next major step in that vision:
The Email Markup Database
https://t.co/LFkOYZh5Kn
Proton Mail (@ProtonPrivacy) noticed that some of their data on "Can I Email?" was outdated, and took the initiative to update it themselves. As a result, our 2025 Accessibility Report now reflects a much more accurate picture of Proton Mail’s strong accessibility support.
@ProtonPrivacy This kind of openness and collaboration benefits everyone in the email ecosystem. We’d love to see more email clients follow Proton Mail’s lead in sharing accurate, transparent data with the community.
https://t.co/M3s3GksM8R
For years, email developers have relied on invisible spacing hacks to influence what appears alongside the subject line in the inbox. But there can be a cleaner, more consistent approach: a simple meta tag.
Our latest blog post explores how preview text could be standardized using a metadata-based solution, which aligns with how Google's Gmail and Yahoo Mail already support Schema structured data in emails today.
https://t.co/9NonXvaAHV
Accessibility in email is hard enough. When email clients block even the most basic accessibility features, they’re not limiting creativity; they’re limiting access.
If you’re working on Gmail, or any major email client: help us make this better.
Read our article "Email clients are stripping out accessibility at the expense of user needs" to learn more about this:
https://t.co/vSjUhFzonE
Accessibility in email is hard enough. When email clients block even the most basic accessibility features, they’re not limiting creativity; they’re limiting access.
Respecting user preferences is non-negotiable for inclusive digital communication. It's time email clients enable developers to build more accessible HTML emails.
In celebration of #GAAD, we have published our annual email accessibility report.
Accessibility in HTML emails remains critically under-addressed in 2025. Across the ecosystem, accessibility failures are systemic, widespread, and largely preventable.
https://t.co/mjGqgueJsu