I don't have a PayPal account. Why did I get an email from PayPal that I received a payment?

PayPal is an account-based system that allows members to send online payments to anyone with an email address or mobile number.If you received a payment notification from PayPal, someone may have sent a payment to you. You can accept the payment by clicking Sign Up at the top right of any PayPal web page. Should the recipient not already have a PayPal account, they must create a PayPal account to accept the payment or the amount will be refunded to the sender.