Accounts are deactivated and removed after four months of no use.
When an account is deactivated, you won't be able to access it, regardless of whether or not email has been received in the account during that time.
And sorry, but you can't retrieve any of the information that was formerly stored in it.
TERMINATED ACCOUNTS - DELETED ACCOUNTS
you will lose access to your Yahoo! ID, Yahoo! Mail, and profile names. yahoo will also delete your account data and settings across the Yahoo! network. This includes any contents in:
Yahoo! Mail
Yahoo! Address Book
Flickr
Yahoo! HotJobs
GeoCities
Yahoo! Briefcase
My Yahoo!
Yahoo! Groups
Finance Portfolio
Any other area of Yahoo! that can only be accessed with your Yahoo! ID and password
Answers & Comments
Verified answer
DELETE YAHOO ACCOUNTS
Q&A ACCOUNTS ETC ARE DELETED TO
IF YOU DO NOT SIGN IN
Accounts are deactivated and removed after four months of no use.
When an account is deactivated, you won't be able to access it, regardless of whether or not email has been received in the account during that time.
And sorry, but you can't retrieve any of the information that was formerly stored in it.
TERMINATED ACCOUNTS - DELETED ACCOUNTS
you will lose access to your Yahoo! ID, Yahoo! Mail, and profile names. yahoo will also delete your account data and settings across the Yahoo! network. This includes any contents in:
Yahoo! Mail
Yahoo! Address Book
Flickr
Yahoo! HotJobs
GeoCities
Yahoo! Briefcase
My Yahoo!
Yahoo! Groups
Finance Portfolio
Any other area of Yahoo! that can only be accessed with your Yahoo! ID and password
DELETE ACCOUNTS
OR TO DELETE MULTIBLE ACCOUNTS
BE SURE TO SIGN IN THE CORRECT ONE
https://edit.yahoo.com/config/delete_user
http://help.yahoo.com/l/ph/yahoo/privacy/privacy-2...
http://help.yahoo.com/l/us/yahoo/mail/original/acc...
http://help.yahoo.com/l/us/yahoo/mail/original/acc...
http://help.yahoo.com/l/us/yahoo/mail/original/acc...
http://help.yahoo.com/l/us/yahoo/mail/original/
http://help.yahoo.com/help/sg/mail/config/config-1...
http://help.yahoo.com/help/us/bizmail/access/acces...
Click this link:http://help.yahoo.com/l/us/yahoo/mail/yahoomail/ac...
Scroll down to the 'account deletion' link and follow the instructions.
you have to go into the edit account part in yahoo and and their is a link to 'delete this account' try it ok