SOG used constantcontact.com to send a mass email too everyone (stockholders and investors) about their new well project in Alfalfa County, OK with Chesapeake Energy.
Because it came from constantcontact.com, it most likely went through your email filter and was directed to your junk mail folder or promotions folder (used by gmail.com).
Look for an email with a sender address of {SOGCO <info@superioroilandgas.com>}