It depends on how long ago you last used it. If it's been more than 4 months since you last used that email, that it would have been deactivated by Yahoo!. It's possible after 90 days to re-use a name as long as no one else had taken the same name, but any contacts or address book entries, and all emails and attachments in all folders would have been deleted and can not be retrieved.
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It depends on how long ago you last used it. If it's been more than 4 months since you last used that email, that it would have been deactivated by Yahoo!. It's possible after 90 days to re-use a name as long as no one else had taken the same name, but any contacts or address book entries, and all emails and attachments in all folders would have been deleted and can not be retrieved.