Is Gblock — Block email tracking in Gmail safe?

Clean risk

Gblock reports suspected Gmail tracking-pixel URLs and rewrites external email links through Gblock proxies.

In Gmail, Gblock detects small image responses that look like tracking pixels and sends the image URL to www.gblock.app with the extension auth token. When click-tracking protection is enabled, it replaces non-Gmail email links with signed URLs under a regional Gblock proxy so the original destination URL is handled by the proxy before navigation.

Beschi Jacopov0.4.0Chrome Web Store
0Risk
Who publishes it

Beschi Jacopo - no other listings under this identity, 1 shared hostname

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Beschi Jacopo
Registered address
Via Don Lino Bonomelli, 24, Montichiari, BS 25018, IT
Registered contact
Jacopo Beschi

Shared hosts - 1 hostname

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

gmass.co
Also called by 4 other listings, including Tracker Blocker, GMass

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 0.4.0. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on googleusercontent.com

    *://*.googleusercontent.com/*

  • Read and change your data on mail.google.com

    *://mail.google.com/*

  • Block and redirect the requests your browser makes

    declarativeNetRequest

  • Watch every request your browser makes

    webRequest

  • Store data in your browser

    storage

  • Schedule its own background tasks

    alarms

  • Run its own code inside the pages you visit

    scripting

Where it sends data

Destinations our analysis observed gblock-%E2%80%94-block-email-trac contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • us-proxy.gblock.app

    gblock-%E2%80%94-block-email-trac sends data to us-proxy.gblock.app. No other extension we have analysed sends data here.

  • www.gblock.app

    gblock-%E2%80%94-block-email-trac sends data to www.gblock.app. No other extension we have analysed sends data here.

Updated 30 September 2026jlnjoejlgadiipndbpilnicleimjfhcb