I don't know enough about the subject to dispute anything on the website (also, tl;dr), but I have my doubts about an AI marketing firm's estimates on the ROI of marketing technologies.

Yep. That's why FairMail is so great. It can be set up to not open images nor original formatting (HTML) by default. And for web, I hope that CanvasBlocker is enough to everytime appear as separate viewer

But it is true that companies do use those pixels. And also it's kinda funny how that article is worded. Like a dead-pan troll that aims to make ones blood boil

The data Is sourced from Meta. Possibly it is a bit inflated, since they sell the service, but I imagine they know what they sell.

To be fair, I'm not too interested in that number itself; the article is rather interesting since it broadly goes in depth into why and how tracking pixels are used and what is the economy behind them.

Apparently they found a solution.

In 2026, GTM added enhanced server-side tagging containers that run on Google Cloud or your own infrastructure, sending data to ad platforms via server-to-server APIs rather than browser requests. This bypasses ad blockers entirely while maintaining GDPR compliance through first-party data collection.

If I understand correctly, that is only info if I was sent the mail, not if I've seen it. And no way to track if I have been on shop's site and what I've bought

I believe that is about browser navigation tracking, not email.

But to be fair I did not dig down on how it works.