Supersonic AI

Clean your inbox at supersonic speed

Supersonic – AI Email Assistant for Gmail & Outlook Cut your inbox time in half with Supersonic — the AI-powered email assistant trusted by founders, engineers, and VCs. Supersonic helps you reply faster, write smarter, and stay on top of what matters. Key features • One-click AI replies – Personalized, professional responses generated instantly • Message previews – Hover to preview without opening emails • Send confirmation – Avoid misfires with smart send prompts • Thread summaries – Catch up on long conversations in seconds • Tone & style tuning – Match your voice or switch tones in a click • AI search (available soon!) – Find any conversation with natural language queries • App integrations (available soon!) – Works with Notion, Linear, and more Built for busy professionals who want clarity, speed, and control in their inboxes. Whether you're managing clients, projects, or a fast-moving team, Supersonic supercharges your email flow. Works seamlessly with Gmail and Outlook via a lightweight Chrome extension.