There is also a simple, basic step you can take to avoid trackers: stop your email from automatically loading images, since images are where the majority of these pixels hide. You won’t be able to avoid all of the trackers that can hide in your email this way, but you will stop many of them. Here’s how to disable image autoloading in the major desktop and mobile email apps:
How does it work? A single tracking pixel is embedded in the email, usually (but not always) hidden within an image or a link. When the email is opened, code within the pixel sends the info back to the company’s server. There have been some attempts to restrict the amount of information that can be transmitted this way. For example, since 2014, Google has served all images in Gmail through its own proxy servers, which could hide your location from at least some tracking applications. And extensions such as Ugly Email and PixelBlock have been developed to block trackers on Chrome and Firefox. Gmail on the web
Note that this will also turn off Gmail’s dynamic email feature, which makes emails more interactive. In the “General” tab, scroll down to “Images” and select “Ask before displaying external images.”
Microsoft Outlook.com While the browser-based version of Outlook doesn’t let you stop loading images, you can make it load images through its own service. To enable that: Outlook.com can route incoming images through its own service.
Microsoft Outlook (Office 365) for Windows 10 To stop automatic downloads, go to the Trust Center. Microsoft Outlook (Office 365) for Mac
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