IIRC their servers cache them the first time you open an email, only preventing them from triggering again if you open the email more than once EDIT: it looks

IIRC their servers cache them the first time you open an email, only preventing them from triggering again if you open the email more than once EDIT: it looks like it doesn’t even do that, and “might even benefit email marketing, for sure not blow it up” if this isn’t out of date: https://blog.filippo.io/how-the-new-gmail-image-proxy-works-and-what-this-means-for-you/#bonusthearstechnicaarticle https://blog.filippo.io/how-the-new-gmail-image-proxy-works-...