Phoney email asking for info, threatening deletion of account?

Well, when I enter that in a search engine it went to yahoo mail so I suspect that you can ignore it without worrying. Yahoo should have your account information so shouldn't need it again. If you want to make sure go to yahoo.com and I believe that you can look at your profile there and see what that tells you. his particular thing may have come from an old girl friend or wife who wants to check up on you.