I've had two messages over the last few days trying to get me to provide my gmail password (presumably, maybe other stuff too, I haven't clicked). They say that my email address is going to be blocked unless I re-authorise it. As with most phishing attempts, there's a link that appears to be for a page on the google domain, but if you hover over it and check the bar at the bottom of your browser you'll see it points to a different address.
Gmail has an option to automatically report phishing. Click the down arrow at the top right hand corner of the message for options.