The changes to tracking pixel is a bit complex. Yes some email clients do not load any images. Other email clients load the image through a proxy to hide the us

The changes to tracking pixel is a bit complex. Yes some email clients do not load any images. Other email clients load the image through a proxy to hide the user IP (google/yahoo). Apple's Mail Privacy Protection (MPP) loads all images at the time it was delivered to a device. That metric is still very useful because you know the device received it and it's an active email address. Versus the alternative is to send an email and wait for an click if they have images turned off.