Email apple id

See: If you forgot your Apple ID  https://support.apple.com/en-us/HT201354  and

 If you forgot your Apple ID password https://support.apple.com/en-us/HT201487

You also can use Having trouble signing in/iForgot  https://iforgot.apple.com/password/verify/appleid 

You also are likely to need to See If you forgot the answers to your Apple ID security questions https://support.apple.com/en-us/HT201485

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If you end up not being able answer your security questions successfully, which seems extremely likely, then see: Security and your Apple ID https://support.apple.com/en-us/HT201303

This document says “without proof of your identity via security questions and other carefully selected criteria, Apple Support can't help you reset a password or perform any other actions on your account.”

Thus, we can do nothing to help you if you can't answer your security questions successfully, except to mention that Apple support might help you if you have an extenuating circumstance (e.g., you have the receipt for your purchase of a pertinent device with its serial number on it).

If you want to contact Apple support to discuss any possible extenuating circumstance, see these support options:

Get a call from Apple support to help solve your problem using this

link https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362

Apple ID Support https://support.apple.com/apple-id

Apple ID account security for country-specific and

region-specific help https://support.apple.com/en-us/HT204169

Get Support: We’re here to help https://getsupport.apple.com/. Go through

the options to find the best support option.

If you can sign into the ID, you can do a name change on your Apple ID to get a working email address. Note the restrictions in the article.

Apple ID Name Change.        

 What to do after you change your Apple ID or password - Apple Support    I suggest doing this before you change your Apple ID or password.

Based on what I have read, I suggest you leave your Apple ID email address as a 3rd party email address because you have more flexibility if you need to change the email address. For example, if the Apple ID got compromised, you can change it to another address. I also have read of many people who were locked out of their accounts when they forgot their password. Since the recovery email address is the @iCloud email address, if you forget your password, you also can't access your email to get emails from Apple to recover your account. You can set a rescue email address, but for some people, this hasn't worked.

You should be able to access your account through security questions. See If you forgot your Apple ID password – Apple Support for help