I work with Paypal everyday. If the actual subject matter of the email is not notified when you log in normally then it's phishing. I.E "So and so has opened a Paypal dispute, click here to resolve", if that's not showing in the resolution centre when you login it's dodgy.
Never, ever click on a link to Paypal and log in, even if it seems legit. Same with Ebay emails, just don't bother. There are some right dodgy folk out there
