- Render HTML emails in sandboxed iframe (srcdoc) for true-to-life
display with complete CSS isolation from app styles
- Detect emails with native dark mode (prefers-color-scheme) and
let them handle their own theming
- Apply CSS filter inversion for dark mode on emails without native
support, with re-inversion for images/media to preserve appearance
- Add per-email light/dark toggle button (Sun/Moon icon) next to
email size, resets on email change (not persisted)
- Fix HTML reply/forward to include original email HTML content
- Send replies as multipart/alternative (text + HTML)
- Add drag-and-drop file attachments with overlay indicator
- Auto-resize composer textarea to avoid double scrolling
- Pin attachments section and bottom toolbar outside scroll area
- Collapsible attachment list (show 3, toggle for more)
Linus Rath
9bffb72338