Resources
Original research on interactive email
Sourced reports and data on email client rendering, interactivity, and deliverability — every number traceable to a named source, updated as the underlying data changes.
August 23, 2026
State of Email Client Rendering 2026
A sourced 2026 breakdown of which email clients render kinetic CSS, in-email forms, and AMP for Email, by real share of tracked opens.
Read the reportAugust 23, 2026
Apple Mail Privacy Protection Explained
How Apple's Mail Privacy Protection actually routes and pre-fetches images, why it inflates open rates, and why click, vote, and form-submit tracking survive it when open pixels don't.
Read the reportAugust 23, 2026
How CSS :checked Interactivity Works
The hidden-checkbox CSS technique behind carousels, accordions, quizzes, and forms in email — no JavaScript involved — and a sourced breakdown of exactly which clients render it.
Read the reportAugust 23, 2026
Dark Mode Email Support 2026
Which email clients honor prefers-color-scheme, which auto-invert or corrupt it instead, and why the color-scheme meta tag alone won't save a poorly tested email in 2026.
Read the reportAugust 23, 2026
Accessible Interactive Email Checklist
How WCAG 2.2's success criteria for alt text, contrast, keyboard access, and target size apply to CSS-only interactive patterns like carousels, accordions, polls, and forms in email.
Read the report