CMDK (formerly Simplehuman) is a Chrome extension that sits on top of Gmail and adds the keyboard-first muscle of pricier clients. A command palette runs everything, single-key actions archive and delete, natural-language snoozing sets reminders, and read receipts track when messages are reopened. Used by VC firms that want Superhuman-style triage speed inside native Gmail without moving their inbox or paying the premium tier.
Key features
- ·Command palette and single-key actions inside native Gmail
- ·Read receipts and keyboard-first triage as a Chrome extension
Popular use cases
- ·Clear a 200-message inbox with single-key triage and command-bar actions instead of clicking menus
- ·Snooze founder follow-ups and LP threads in plain English and catch reopened replies with read receipts
Last reviewed · April 26, 2026Suggest an update ↗