No "Report Phishing Attack" option

I received an obvious phishing email at my cox.net address. While the email web interface allows me to mark it as spam, or block the sender, neither of those options seem great. It's worse than spam. And since the return address is likely spoofed, it's unclear whether the real sender or the spoofee would be blocked. It feels like something that should be reported, but there does not seem to be a report option available.