For the device dimension there is a value called "proxy". Anyone know what the means/includes? Could that be both mobile and desktop?
This can be explained by opens generated from the google image proxy server whereby the open is sent to campaign with the device and platform as proxy instead of the actual platform.
browser: "Google Image Proxy"#012
The example above is an actual log from the dynamic reporting system which shows the data sent from the device to ACS.
This can explain the high no. of proxy devices you see in the open report.