Sondar tracks email opens and link clicks for Gmail — and keeps every byte on your server. Honest confidence levels, never inflated guesses.
Every tracked message gets a live status pipeline, a full event timeline, and a per-recipient breakdown for group sends. This is the real dashboard — open it and click around ↗.
Pixel-based opens tagged High or Possible — we tell you when a proxy prefetch is masking the truth.
A click is a human decision. Sondar records every link hit with redirect status, so you always have one signal that can't be faked by a mail client.
Opens and clicks POST straight to Slack, Discord, n8n or any endpoint — no polling, no inbox babysitting.
Sent to five people? See exactly which of them opened, which clicked, and when — each recipient tracked independently.
Apple Mail Privacy Protection and Gmail image proxies are detected and filtered, so your own opens never pollute the data.
Install the extension, bring your own Google OAuth credentials, and Sondar tracks straight from your Gmail compose window.
No SaaS account. No email metadata leaving your network. Pull the image, point it at your Postgres, and Sondar is tracking in under a minute — GDPR-safe because the data never leaves your infrastructure.
Apple Mail Privacy Protection pre-loads your tracking pixel whether or not the email was read. Closed trackers count that as an open and inflate your numbers. Sondar refuses to.
We grade every open by confidence, tell you why, and let you audit the logic — because it's open source.
Pixel loaded from a real client IP, or a link was clicked. This is a person, reading your email.
A privacy proxy prefetched the pixel. Could be a read, could be a machine. We won't pretend to know.
Delivered, but nothing back. An honest blank beats a fabricated open.
Sondar is AGPL-3.0. Every line of the tracking logic — how a pixel becomes an "open", how a proxy gets flagged — is public. Fork it, self-host it, send a PR.
Open the dashboard, or spin up your own instance in a minute.