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Pixelblock Chrome extension

Pixelblock (listed as Email Tracker + Pixelblock Detector & Blocker) does two things: it blocks the invisible tracking pixels other people embed in emails they send you, and it tracks whether emails you send are opened. It's best for anyone who wants more privacy in incoming email and read-receipts on outgoing email. The catch: it works inside Gmail, Outlook, Hotmail, Office 365, and Yahoo Mail in the browser, not in a separate desktop mail app.

  • PriceFreemium
  • CategorySecurity & Privacy
  • Works inChrome, Edge, Brave (desktop)
  • ✓Privacy-friendly

Last checked against the Chrome Web Store listing · Independent, not affiliated with Google

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Pros

  • free and unlimited email tracking, per the listing
  • works across multiple webmail providers: Gmail, Outlook, Hotmail, Office 365, and Yahoo Mail
  • combines two features (blocking incoming trackers, tracking outgoing opens) in one extension

Cons

  • only works within supported webmail sites in the browser, not native mail apps
  • needs to read your webmail pages to detect and block tracking pixels, which is inherent to how it works

Best for

  • blocking hidden tracking pixels in emails sent to you
  • seeing when emails you've sent have been opened
  • Gmail, Outlook, or Yahoo Mail users who want more email privacy control

Skip it if

  • desktop or mobile mail apps outside the browsers it supports
  • users who don't want an extension reading their webmail pages to detect tracking pixels

Key features

  • detects and blocks open-tracking pixels in incoming emails
  • shows read receipts for emails you send
  • works across Gmail, Outlook, Hotmail, Office 365, and Yahoo Mail
  • free and unlimited tracking per the store listing

What Pixelblock does

Pixelblock works inside your webmail (Gmail, Outlook, Hotmail, Office 365, or Yahoo Mail) to strip out invisible tracking pixels that senders use to know when you've opened their email. At the same time, it can tell you when emails you've sent have been read by the recipient, giving you the same kind of visibility in reverse.

Is Pixelblock free?

According to its store listing, Pixelblock offers free and unlimited email tracking, with no mention of a separate paid tier.

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Pixelblock: FAQs

Is Pixelblock free?

Yes, the listing describes it as free and unlimited for email tracking.

What does Pixelblock do?

It blocks tracking pixels in emails you receive and shows read receipts for emails you send.

How do I use Pixelblock?

Install it, then open Gmail, Outlook, Hotmail, Office 365, or Yahoo Mail; it works automatically once active.

Does Pixelblock work with Gmail?

Yes, Gmail is one of the supported webmail providers.

Does Pixelblock work with Outlook?

Yes, it supports Outlook, Hotmail, and Office 365 as well.

Is Pixelblock safe to use?

It needs to read your webmail pages to detect and block tracking pixels, which is necessary for its core function.

What are alternatives to Pixelblock?

Other email tracker-blocker extensions and some built-in webmail privacy settings offer similar pixel-blocking.

Can Pixelblock tell me if my sent email was read?

Yes, tracking whether recipients open your sent emails is one of its two main features.

Does Pixelblock work outside the browser?

No, it works within supported webmail sites in your browser, not desktop or mobile mail apps.

Does Pixelblock work with Yahoo Mail?

Yes, its listing covers five webmail services in the browser: Gmail, Outlook, Hotmail, Office 365, and Yahoo Mail. It blocks tracking pixels and shows read status across all of them, not just Gmail and Outlook.