Product Type: Email Client. Keywords: email, mail, inbox, compose, thread, newsletter, filter, reply, gmail, spark, superhuman. Primary Style: Flat Design + Minimalism. Secondary Styles: Micro-interactions, Soft UI Evolution. Landing Page Pattern: Feature-Rich Showcase + Demo. Dashboard Style: N/A - Inbox focused. Color Palette Focus: Clean white + brand primary + priority red + snooze amber. Key Considerations: Unified inbox. Swipe actions (archive/delete/snooze). Priority sorting. Smart reply. Unsubscribe tool..