Just looking into implementing the pixel tracker to capture users’ IP addresses when they open an email. However, have been reading that Google’s relatively new image proxy/caching system would prevent the passing through of IP.
"However, Google added a twist to loading images by default; they’ll be loading them via a proxy and cache the images. This means that using images to identify the recipient’s location and browser details won’t work." from: https://customer.io/blog/gmail-loading-images.html
Shall I assume that everything above in this thread was written before Google turned on this proxy system? And that the quote from Customerio is, unfortunately, now the ground truth?