Not directly related to your question, but before you have this happen to you again in the future, buy yourself a domain name, and use that domain name for your

Not directly related to your question, but before you have this happen to you again in the future, buy yourself a domain name, and use that domain name for your personal email. You can either run your own server, or have one of the commercial entities handle the actual email server part for you. But with your own domain name, you won't lose your email address again because "the organization through which [you] received it has ... changed their policy". If you use a provider, and they change their policy, you can just move to another provider, yet your address will remain the same.