This is a phishing attempt first reported to CSULB ITS on December 23, 2013.
From: Walmart Delivery Agent 
Sent: Saturday, December 21, 2013 2:30 PM
Subject: Standard Delivery Failure
Email requesting recipient to click on a link. Links from unknown sources can contain malware that can infect computing devices.
Intent of the Email
The sender is possibly maliciously intending to load malware onto your computing device.
Figure 1: Screenshot of the phishing email