Deck is an AI assistant that operates entirely over email, giving users a dedicated assistant email address they can CC or forward messages to. It listens to threads, flags key details, drafts replies, and runs scheduled routines that deliver results directly to your inbox. Deck learns your preferences, priorities, and contacts over time, building context without ever reading your inbox. It integrates with tools like Slack, Google Calendar, Fireflies, and Notion to help coordinate tasks across your work and personal life.