Is Gmelius Tracking Your Email? How to Block It

Key Takeaways

• Gmelius inserts an invisible tracking pixel in emails sent by its users, triggering a real time notification when you open the message.
• On the free plan, senders can track up to 100 emails per month; paid plans remove that cap.
• Gmelius also tracks individual opens from CC and BCC recipients, not just the primary addressee.
• Gblock's blocklist covers Gmelius's tracking domains and silently prevents the open event from firing in Gmail.

What Is Gmelius?

Gmelius is a Gmail extension that adds shared inboxes, email assignment, internal notes, and team analytics on top of Google Workspace. It is primarily used by customer support teams and sales teams who collaborate directly inside Gmail without switching to a separate helpdesk tool. It competes with other shared inbox platforms that also log opens, so if your team uses one of those instead it is worth checking whether Front is tracking your email.

As part of its sales features, Gmelius includes email tracking — individual open and click tracking for outbound messages sent by users of the extension. The free plan allows up to 100 tracked emails per month; paid plans start at $10 per user per month with tracking limits lifted. Whether you are receiving an email from a Gmelius user or replying to a shared inbox they manage, the same pixel infrastructure may be active.

Does Gmelius Track Email Opens?

Yes. Gmelius tracking works by inserting a small invisible image in the body of outgoing emails. The moment you open the email and your client loads images, a request is made to Gmelius servers to download that invisible picture, which triggers an open notification for the sender. Gmelius's own documentation describes the mechanism: "whenever the email is opened, a request is made to the Gmelius servers to load the pixel picture, which triggers an open notification."

Unlike some trackers that only report the first open, Gmelius notifies senders each time the message is opened. If you open a tracked email three times over a day, the sender receives three notifications, each with a timestamp. This makes it a particularly precise surveillance tool for sales professionals who want to time follow up calls to the moment a prospect is actively reading.

Does Gmelius Track CC and BCC Recipients Individually?

Yes, and this is unusual. Gmelius includes per-recipient tracking — senders can see not just whether the email was opened, but which individual among the CC and BCC recipients opened it and when. This means that even if you were not the primary addressee, your read behavior is logged separately.

For most other tracking tools, CC and BCC recipients generate an aggregate or anonymous open signal. Gmelius attributes opens to specific addresses in the recipient list, which gives senders considerably more visibility into who on a distribution list actually engaged with a message.

What Data Does a Gmelius Sender See About You?

Gmelius shows senders which of their tracked emails were opened, the exact timestamp of each open, whether you clicked any tracked links, and — where CC or BCC tracking is used — your specific address as the reader. The platform also surfaces this data in team dashboards that show response times, email volume, and conversation trends, so your interaction with a company's email is feeding into their broader analytics, not just a single rep's inbox view.

Like most pixel trackers, the image request also passes your IP address to Gmelius's servers. In Gmail, Google routes remote image requests through its own proxy, which partially masks your location, but the open event itself remains precisely timestamped. For a full picture of what email metadata reveals beyond what senders disclose, see what your email metadata reveals about you.

Gmelius Blocks Trackers Too — So Why Does It Also Send Them?

Gmelius includes a tracker detection and blocking feature for incoming email: the extension alerts you when a message you receive contains a tracking pixel and identifies the service that sent it. This is a genuine privacy feature, and it is a useful one for recipients who want to see what is watching them.

The same company that helps you spot trackers also embeds them in every outbound email its users send. This is not unusual in the email tool industry — many services that sell tracking also acknowledge it should be transparent. But it does mean that Gmelius's own tracking infrastructure is something its blocker is not designed to stop. Gblock, which runs independently of any particular sender's toolchain, blocks Gmelius tracking requests in Gmail regardless of which extension the sender is using.

How to Block Gmelius Email Tracking in Gmail

Your options:

• Gblock: Blocks Gmelius's tracking pixel and click redirect infrastructure silently in Gmail. The pixel is intercepted before the request reaches Gmelius servers, so the sender receives no open notification. Tracked links are stripped so clicks cannot be logged through the redirect. The blocklist updates automatically to cover domain changes.
• Disable remote images: Gmail Settings, then General, then Images, then "Ask before displaying external images." This prevents the pixel from loading but also suppresses legitimate images in email and requires a manual click each time.
• Apple Mail with Mail Privacy Protection: Apple prefetches all email images through its proxy, firing the Gmelius pixel at a random time from an Apple server — not when you actually read the message. Only applies if you use Apple Mail rather than Gmail in a browser.

For a full comparison of blocking tools including Ugly Email, PixelBlock, and Trocker, see how to block email tracking in Gmail. If you want to understand how open tracking differs from click tracking in what it reveals about you, see email open tracking vs click tracking explained.

Does Gblock Block Gmelius?

Yes. Gblock maintains a continuously updated blocklist covering Gmelius's tracking domains alongside more than 200 other email trackers. When a tracked Gmelius email arrives in your Gmail, Gblock intercepts the pixel request silently — before it fires — and strips any click tracking redirects. The sender's Gmelius dashboard shows no open event. You still see the email, including any legitimate images. Only the invisible surveillance layer is removed.

Gmelius tracking is a documented product feature, not a security threat, but the act of logging exactly when you read an email — and notifying the sender in real time — is surveillance of your attention. You have every right to opt out of that, and the tools to do so already exist.

Sources: Gmelius email tracking help center, Gmelius tracker blocking feature.