Don't have access to my previous email

Hello! I want to change the email address on this account because I no longer have access to my previous email address. I don't remember exactly why I created the second account, but I mistakenly linked it to Steam. Since I don't have access, I can't unlink it because the code was sent to that email address. The account is linked to my Steam DanteSparda (if you need additional Steam account information, I can provide it).