SorryCorrect, this message is NOT safe.
1- The email address is bad.
Hover the mouse over the email address text ('PayPal Support') to see the actual email address behind it ('PayPalSupport@yahoo.com'), maybe shown down in the status bar of your browser.
[In a phone-browser you may have to press and hold on the email address text for a couple of seconds.] A major company such as PayPal would not use an email account on someone else's service ('yahoo.com').
2- You never should log in through a form in an email (you can't be sure where that information will go).
Instead, use a bookmark you already have, or find the company's web site by searching.
3- The email is trying to panic you into a quick, mistaken response.
(Left and right arrow keys work, too)