Regarding the Gmail Image Proxy

[ikenna8317]

I understand how your tracker is supposed to work. (It basically sends a tiny image. along with the email content, that is hosted on a 3rd party server that will log the IP Address of the victim client when it sends a GET request and send that IP Address to the user of the email tracker... Tell me if i'm wrong ) but Gmail seems to be using an Image Proxy that basically uses a proxy to GET request images to hide the real IP of the victim.

Not sure if this also applies to other email clients like Yahoo, Outlook

Again, let me know if i'm missing something

EDIT:
Yes, other popular email clients like Yahoo and Outlook also use Image proxies to GET request tracking images.