QuietSignal scans your inbox and groups related emails by sender, subject, and order IDs — so receipts, alerts, and threads surface in one click.
QuietSignal is currently in development for Gmail now, Yahoo next then Outlook.
Receipts buried under newsletters. Orders split across a dozen senders. Alerts mixed with everything else. Email clients sort by date — not by what you're actually looking for.
QuietSignal uses deterministic rules — not AI — to identify and cluster related emails the moment you open Gmail.
Reads email senders, subjects, and order IDs directly in the browser. Nothing leaves your device.
Clusters emails that belong together — all your Squarespace receipts, all your Amazon orders, all your Netlify alerts.
One click highlights the matching emails in Gmail so you can act on them immediately.
QuietSignal uses deterministic pattern matching — fixed rules that run entirely in your browser. Your emails never leave your device, no API is called, and nothing is stored on a server. It works the same way every time because it doesn't learn, predict, or infer — it just reads and groups.
Built for people who get too many emails and can't afford to miss one.
Detects order numbers and tracking IDs and clusters all related emails — from confirmation to delivery.
Separates newsletters, alerts, and digests from emails that need action — so nothing urgent gets buried.
Groups all emails from the same domain together. See everything from Squarespace or Netlify at a glance.
Click any group card to instantly highlight those emails in Gmail. No search queries needed.
Auto-scans when Gmail opens. Your groups are ready before you've clicked anything.
100% client-side. No backend, no telemetry, no AI. Your email stays yours.
Join the waitlist and get notified when QuietSignal launches for Chrome.
No spam. Just a launch notification.