A yahoo account is for the email! It makes no sense for emails to be deleted after 1yr/12 months of inactivity and the account be deleted after 2yrs/24months of inactivity and with no notification given to any of the recovery options about a deletion of mailbox or account. I can understand not being able to receive mail, but to permanently delete the account mailbox thoroughly makes no sense whatsoever!! The mailbox should be given the same amount of time as the account.
There’s no need for the account if not for the mailbox/email correspondence; it’s the whole reason for the account. You don’t know what people are going through.