Cant access my old email account?

 I somehow managed to remember my old password, but I keep getting sent to the link where i enter in all of my information to prove the account is mine. All of that was so long ago i don't remember most of it. I know the password to my account but it still is wanting me to somehow verify it? It claims its sending a verification code to an email address, but im not sure what that email is. Again, this is an email i havent used in quite awhile, but i wanted to get access to it to see if i still had anything saved in there from years ago. And when i was done with that, i wanted to close that account to be 100% sure someone else wasnt using it. Please help, as i'd really like to go through it and get it closed. Thanks much.

--Jeremy