Stop adding alternate emails into my Yahoo mail without asking me first.
Your instructions for removing extra emails does not work. Email alias does not exist. There are emails there that aren't even mine. Please remove all extra emails or give me the means to accomplish this task.
Demosthenes Loizides shared this idea
Don’t get locked out of your Yahoo account! It’s important to keep a valid mobile phone number or email address linked to your account in case you ever lose your password, want to switch over to a secure, password-free sign in, need to verify your identity if you sign in from an unfamiliar place, or want to receive notifications of changes made to your account. More info here: https://help.yahoo.com/kb/add-remove-recovery-method-sln2058.html