Technical Getting account back

Hello,
Don't really remember the exact day that it happened but a while back they requested something to do with your account information regarding our account email, since i don't remember my email i cannot get a hold of my old WOW account in which i put in a lot of work.So my question is, is there any possible way for me to get that account back or at least somehow see which email was connected with the account so i can try and get it back that way getting back the WOW account.
Thank you in advance.