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Officially verified details Gblock

Protect your privacy and block email trackers: Gblock protects your privacy in Gmail by blocking email senders from tracking you.

Gblock

Gblock Reviews and Details

This page is designed to help you find out whether Gblock is good and if it is the right choice for you.

Screenshots and images

  • Gblock Block spy trackers and tracking links
    Block spy trackers and tracking links //
    2025-05-14
  • Gblock See who is tracking you
    See who is tracking you //
    2025-05-14
  • Gblock Automated tracker detection
    Automated tracker detection //
    2025-05-14
  • Gblock Proxy anonymization
    Proxy anonymization //
    2025-05-14

Features & Specs

  1. Spy Pixel protection

    Spy pixel tracking is a sneaky technique based on adding an invisible 1x1 image, known as a "tracking pixel," to an email. When you open the email, this pixel sends information back to the sender, revealing details like when you opened it, where you were, and what device you used. All of this is done without your knowledge or consent, making it a serious privacy concern. Gblock detects and blocks tracking pixels, providing complete protection against spy pixel tracking.

  2. Tracking links protection

    Link tracking involves adding custom tracking parameters to URLs, such as "?utm_source=newsletter", or embedding unique tracking codes. Some email marketing tools take this a step further by using URL shorteners to obscure the final destination, making it impossible to remove tracking parameters. Similar to spy pixels, tracking links can expose your location, device details, and other personal information. Gblock protects you from tracking links in two ways: Stripping all known tracking parameters from URLs, and using our proxy server to follow email links, masking your IP address and fully anonymizing your activity. Our proxy also caches responses, so if a tracking link is shared among multiple users, we already know the final destination and can serve it directly without accessing the tracking link. We are confident this would cover you for 99% of the cases.

  3. Automated tracker detection

    Other Browser extensions rely on static lists that require frequent manual updates. But as trackers constantly evolve, this outdated approach becomes less effective. Only Gblock offers a truly intelligent solution with automated tracker detection. Instead of fixed lists, our advanced system dynamically identifies and flags new trackers in real-time. The moment Gblock encounters a new tracker, it analyzes its behavior and reports it to our server—ensuring that future emails containing the same tracker are automatically blocked.

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Questions & Answers

As answered by people managing Gblock.
  1. What makes Gblock unique?

    Gblock protects you from spy pixels, tracking links and anonymizes you via our proxy. Our automated tracker detection keeps us one step ahead of new trackers. No other Chrome extension offers this level of protection!

  2. Why should a person choose Gblock over its competitors?

    Gblock offers the most comprehensive protection against email tracking. Unlike competitors, it includes spy pixel blocking, tracking link protection, proxy anonymization, and automated tracker detection.

  3. Which are the primary technologies used for building Gblock?

    Javascript, Ruby on Rails

  4. How would you describe the primary audience of Gblock?

    Privacy-focused users who do not want their actions tracked without explicit permission.

Videos

Using gBlocks® Gene Fragments as Synthetic Templates for qPCR

Beyond Cloning: 101 Uses of gBlocks® Gene Fragments

Social recommendations and mentions

We have tracked the following product recommendations or mentions on various public social media platforms and blogs. They can help you see what people think about Gblock and what they use it for.
  • Stopping email trackers in Gmail: What Works?
    - Doesn’t leak any data to third parties I’ve been experimenting with this problem myself and I built a small extension called gblock (https://gblock.app. - Source: Hacker News / 11 months ago

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Gblock discussion

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Is Gblock good? This is an informative page that will help you find out. Moreover, you can review and discuss Gblock here. The primary details have been verified within the last quarter. So they could be considered up to date. If you think we are missing something, please use the means on this page to comment or suggest changes. All reviews and comments are highly encouranged and appreciated as they help everyone in the community to make an informed choice. Please always be kind and objective when evaluating a product and sharing your opinion.