It will essentially allow users to ramp up their online security. Thankfully, there are some solutions that include blocking the automatic download (or loading) of external images. Although they cannot access other mails or personal info, these trackers can still accumulate data for targeted ads. You may ask how and the answer is simple - through the promotional picture in the form of ‘Email Tracking Pixels.’ Usually, a single tracking pixel is embedded in the email (anywhere) that sends the info back to the company’s server. However, these emails are not only pushing a product but can also track whether you opened the mail and time spent on them.
If you’re using popular email services such as Gmail, Outlook, and even Apple mail, chances are you will stumble upon a promotional mail at some point.