Know when your emails get read
Invisible Mail Tracker for Gmail gives you real-time notifications when recipients open your emails. Perfect for sales, recruiting, and anyone who needs to follow up at the right moment.
Trusted by teams at leading companies
Everything you need to track emails
Powerful features that help you understand how recipients engage with your emails.
Real-time Open Tracking
Know exactly when your emails are opened, down to the second.
Link Click Analytics PRO
See who actually clicks your links — with human-vs-bot confidence, not just raw counts.
Instant Notifications PRO
Real-time email and in-app alerts the moment a real person — not a bot — opens or clicks.
Detailed Analytics
Confirmed-human open rate, timelines and per-contact engagement — the real numbers, not inflated ones.
Privacy First
Your data stays protected. Gmail access is limited to the features you explicitly enable.
Lightning Fast
Zero impact on your email sending speed.
Bot-proof Accuracy PRO
Every open and click is scored human, machine or unknown — so Apple Mail, Gmail proxy and Outlook scanners don't inflate your numbers.
Follow-up Reminders PRO
Automatic nudges when an email isn't opened in days, or was opened by a human but never got a reply.
Contact Engagement PRO
Rank contacts hot, warm or cold from confirmed-human opens. Group-email activity is shared and does not identify which recipient opened.
Get started in 3 simple steps
Only emails with an inserted tracker are tracked.
Illustrative examples. Actual screens may vary.
What users say on Marketplace
“I like TrackMe! It allows me track emails invisibly!”
John Sina
July 4, 2026
“…Easy setup and works as expected.…”
Svetlana Khan
July 18, 2026
“Includes 5 free invisible trackers and it works!”
Roman Malyshev
April 21, 2026
Quotes and excerpts from Google Workspace Marketplace reviews. Read all reviews →
Clear plans. Clear limits.
Main difference: Free includes 5 invisible trackers/month (+personal bonus codes) and then unlimited with watermark. Pro is unlimited for both invisible and watermark, with deeper analytics.
Free
For personal usage and early testing
- • Invisible limit: 5 per month (+personal bonus codes)
- • Watermark fallback: unlimited tracked emails with watermark
- • Analytics: basic open stats (count + last activity)
- • Whitelabel: none
- • Open tracking dashboard & history
- — No link clicks, alerts, reminders or bot filtering
Pro
For sales teams and high-volume senders
- • Invisible: unlimited
- • Watermark: unlimited + removable for clean emails
- • Link click tracking with human-vs-bot confidence
- • Bot-proof accuracy: filters Apple / Gmail / Outlook false opens
- • Email + in-app alerts on confirmed-human opens & clicks
- • Follow-up reminders: no-open & no-reply nudges
- • Contact engagement scoring (hot / warm / cold)
- • Analytics: advanced breakdowns + custom domain
- • Priority support
Free vs Pro, simply
| What you get | Free | Pro |
|---|---|---|
| Invisible tracking | 5 emails / month | Unlimited |
| After the free limit | Keep tracking with a watermark | No watermark |
| Insights | Open counts & latest open time | Detailed analytics & link clicks |
| Notifications | Dashboard results only | Filtered email & in-app alerts |
Pro alerts exclude automated or uncertain opens. An open does not always produce an alert.
See all Pro features and billing options →Frequently asked questions
Everything you need to know about Invisible Mail Tracker for Gmail.
How does the invisible Gmail email tracker work?
Invisible Mail Tracker for Gmail injects a tiny invisible tracking pixel into the email you send through Gmail. When the recipient opens the message, the pixel loads from our server and we record the open event in real time, including timestamp and engagement details.
Is the email tracker really invisible to the recipient?
Yes. The Pro plan and the first 5 monthly tracked emails on the Free plan use a transparent 1x1 pixel that does not display anything to the recipient and does not add any visible footer or watermark.
Do I need to install anything to track Gmail emails?
You can use the Gmail Add-on or the Chrome extension. Both connect to your Gmail account through Google OAuth — no SMTP changes, no proxies and no extra configuration required.
Is my email data safe?
We use Google OAuth with the minimum required scopes, encrypt refresh tokens at rest, and never sell your data or use it to train AI models. See our Privacy Policy for full details.
How much does the email tracker cost?
There is a Free plan with 5 invisible tracked emails per month and unlimited tracking with a small watermark. Pro starts at $2.49/month billed yearly with unlimited invisible tracking, advanced analytics and watermark removal. See pricing.
Does it work with G Suite / Google Workspace?
Yes, it works with personal Gmail and Google Workspace accounts. Workspace administrators can install the add-on for the whole domain.
Send with confidence. Follow up with data.
Start on Free with invisible + watermark fallback, then upgrade to Pro for unlimited invisible, removable watermark, and advanced analytics.