How Can You Find Your Old Email Address?

When calling an Internet service provider, the company may ask you for your account number, an answer to a security question, a user name, your home address or a telephone number. Yahoo requires you to answer secret questions. Gmail emails you a forgotten user name if you registered an alternate email when creating the account. MSN Hotmail does not provide a way to recover an old email address if you do not remember your user name, states eHow.