Alias email

Hi,

First of all, your son must create a new Yahoo account with his own email address. It can't be the alias as it's permanently linked to your account. Once your son's account created, click the Settings icon > More Settings > Mailboxes > Add mailbox.

Select Yahoo and sign in to your account using the alias. The account alias will be sync on his own account, then he can start using it. As it's impossible to transfer aliases or create new ones from now, there's no other way to give it.