my friend recently gave me her e-mail address,i added her to my contacts?

list then sent her an e-mail,which promptly came back marked invalid e-mail address,i had the same problem with another friend,i got user doesnt have a valid e-mail address,what is this? the e-mail addies werent @ymail .com or yahoo.com,does yahoo hate any other e-mail addies other than ymail or yahoo.com? i changed one addie to yahoo.com and it went out.im puzzled over this.please tell me why wont other e-mail addies work other than ymail or yahoo?

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Is there a way to delete my Yahoo Answers account?

But keep my e-mail address? So, I still have my e-mail address and things, but all my history on Yahoo Answers is completely cleared (my questions, answers, 'fans' etc.)?

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How to delete an old e-mail address from my Yahoo e-mail account set up?

Whenever anyone clicks "Reply" to any e-mail I send out of my Yahoo e-mail account, the reply is directed to an old e-mail address that was closed years ago, and the person gets an error message that it is undeliverable. My yahoo e-mail address works fine for receiving all in-bound e-mails EXCEPT for "Reply" to any outbound e-mail I send. I have already ensured many times that the secondary e-mail address that Yahoo maintains is an active current e-mail acct outside of Yahoo. I cannot find any user accessible link in Yahoo to find & delete that old e-mail address that Yahoo always tries to direct replies to...Help! Thanks...

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