I have the habit of looking through my mail account's Spam folder before hitting the trash can button. I would browse through the mails to check if an important message has been trapped in the spam filter.
I came across an email from PayPal. It says that I have successfully sent a payment of $149.49 USD to a certain Dave Klein. The problem is, I haven't made such purchase at all. Like in the official emails of PayPal, this one has the company logo and a link to "PayPal's website" for me to see the transaction.