Notes on Google's GPDR Policy
I received a notice from Google on March 22, 2018, informing that they would be adopting the European GPDR. This will affect all their core services (including Gmail, and all of their advertising and measurement services like AdWords, AdSense, DoubleClick and Analytics) and will take place on May 25, 2018.
Updated EU User Consent Policy
Here is the EU Consent Policy (which is currently being updated).