Best answer:

Answer by J R ;)
Lost and Deleted Emails or Contacts.

Always click on Trash folder first they may still
be in there,if not,
click on the link not more than and if it’s been less than
24 hrs there is a chance to get them back.

http://help.yahoo.com/l/us/yahoo/mail/classic/mail_restore.html

or for lost contacts

http://help.yahoo.com/l/us/yahoo/contacts/ab_restore.html

Excellent luck.

J R :)

What do you reflect? Answer not more than!