It's happened to all of us. You check your email, and you see you've got a message...but when you crack it open, it's from an African prince offering to make you rich beyond your wildest dreams, if only you can float him a little loan. Obviously, this is spam. (Unless your life is really different from mine, and you regularly have contact with temporarily broke royalty.)
But sometimes spam is more insidious than this; it might have a reputable company's name at the top, or maybe it might appear to be from someone you know. How can you separate the spam from the legitimate email? Let's put on our spam sleuth hats to learn about the hallmarks of traditional spam email, and some methods you can use to have it banished from your inbox!
According to the Radicati Group, an estimated 205 billion emails were sent in 2015, breaking down to 2.4 million emails per second. Out of all these emails, it's estimated that 90% of these were spam. Yep, only one in ten emails sent are actually legit, which isn't surprising if you let your spam filter go unchecked for a week or two.