How can I find out if emails I receive are fraudulent ?
Emails that come with unfamiliar Email addresses and don't address you by your name are probably fraudulent. Also, those that ask you for personal information or claim that you have won a lottery that you never participated in the first place.
google the name, call the better business bureau where they say they are located, and if it sounds to good to be true it usually is.
There is a web sight call snopes.com that gives the facts about any topic.