PixelBlock is a Gmail extension that blocks email tracking attempts used against you to detect the opening/reading of emails. PixelBlock displays a 'red eye' when it finds and blocks a tracking attempt inside an email you're reading.

Take control of your email privacy

Privacy Policy: This extension does not store/save or transmit any data from Gmail or your computer in absolutely any form.

Note: Using PixelBlock will not interfere or prevent you from using any email tracking software on the outgoing emails you send. It just protects you from being tracked by others.

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