It is a phishing email, DO NOT click on any of the links as those links will download virus into your computer. Click on the Check-Box provided in-front of the email and click on the down-arrow located next to SPAM tab --> In the appeared options, select "REPORT A PHISHING SCAM".
For future reference, here are some pointers to find out whether a message received was from Yahoo or not!
* First & foremost point is to look for the Yahoo emblem... If the email is from Yahoo, the sender will be preceded by the YAHOO EMBLEM -- Alphabet "Y" in Purple background. You can see the emblem right now in your URL bar;
* When you move cursor to that " Y ", you will see a prompt "Verified Message From Yahoo";
* As their account holder, Yahoo knows your name. Hence, they will address you with name;
* Yahoo! NEVER provides any links in emails they send;
* Yahoo NEVER sends threatening emails about your account being closed or exceeded storage, etc.,
* Yahoo email address you will receive from: @cc.yahoo-inc.com and/or @yahoo-email.com
**For further clarifications, please click on PENCIL icon located below your Question and select "ADDITIONAL DETAILS".