Compare the top 8 email tracker extensions Chrome extensions for 2026. Find the best free tools ranked by performance, privacy, and features.
Looking for the best email tracker tools for Chrome? We tested, scored, and ranked the top options so you can pick the right one without sifting through thousands of results in the Chrome Web Store.
Every extension on this list has been evaluated for safety, privacy, performance, and real-world usability. No affiliate links, no sponsored placements — just honest, data-backed recommendations.
Our top pick is Mailtrack. It adds read receipts to Gmail, marking each message you send with checkmarks that show whether it was delivered and whether it was opened, and it notifies you when a recipient opens the same message again later. Setup is a Gmail permission grant and nothing more. It is the option that does one job cleanly, which suits people who want to know whether a message landed rather than people running a full outbound sequence.
Read receipts in Gmail with delivery and open indicators on every sent message
Best for: People who only need to know whether an email was opened
A CRM built into the Gmail inbox, with deal pipelines alongside open tracking
Best for: Small teams running deals out of a shared inbox
Open and click tracking written back to the HubSpot record for each contact
Best for: Sales teams already using HubSpot as their system of record
Send later, follow-up reminders and response tracking inside Gmail
Best for: People whose real problem is remembering to follow up
Open and link-click statistics for Gmail with follow-up reminders and reports
Best for: People sending outreach who need click data, not just opens
The extension inserts a tiny invisible image into the message. When the recipient opens the email, their mail client requests that image from the tracking service, and the request is recorded as an open. Link tracking works differently, by rewriting the URLs so a click passes through the service first. Nothing is installed on the recipient side and nothing is asked of them.
Sometimes, and plenty of opens never register. Anyone who blocks remote images never triggers the pixel. Extensions such as Email Tracker plus Pixelblock Detector actively find and block tracking pixels and tell the recipient who tried. Image proxying can also produce opens that were not real. Treat open data as a weak signal rather than proof of anything.
Tracking pixels are widely used, but consent rules differ by jurisdiction. Under GDPR in the EU, tracking that identifies an individual generally needs a lawful basis, which is why Mailtrack states GDPR compliance on its store listing. For personal mail to people who already know you the practical risk is low. For cold outreach at scale, check the rules where your recipients live.
A great email tracker tool balances powerful features with minimal permissions. It should do its job well without requesting access to data it does not need. Look for active developers who publish regular updates, a transparent privacy policy, and a strong track record in the Chrome Web Store.