Unlike messenger apps that have read notifications, email doesn’t work quite the same way, or at least there aren’t any settings that makes it easy for people to track if you’ve read their email.
So what some companies have done is that they embed their emails with a pretty much invisible pixel in a link or an image, so that whenever the email is opened, they will know that you have read their email. Sometimes that information also contains when you’ve opened it and where you’ve opened it.
It feels like an invasion of your privacy and if you’d rather not have companies know what you do with their emails, then here is how you can block it if you’re using Gmail.
What this does is that it disables images from loading in the email, which in turn affects the pixel as well. While your emails might look a bit bland, they will disable the tracker, but you can always manually click the “Display Images” option within emails that you trust.
If you prefer to maintain your Gmail’s current image settings and not mess with that, then your next best alternative would be to use browser extensions. This includes Ugly Email and PixelBlock, both of which are free to download and use. The main difference is that Ugly Email is available for both Chrome and Firefox, while PixelBlock seems to be exclusive to Chrome for now.
Download and install them like you would a normal browser extension and you’re good to go. Emails with pixel trackers will show an “eye” icon next to the sender’s name to let you know that the tracker has been blocked.