You canv iew the email registered to your SQUARE ENIX Account as well as other account details by following the steps below:

(1)  Log into the SQUARE ENIX Account Management System (https://secure.square-enix.com).

(2)  Under ‘Account’, select‘Account Information’. You may be required to enter your registered Date of Birth to proceed.

(3)  Your account information will be displayed. Your registered email will be towards the bottom.

If you are experiencing difficulties logging into your SQUARE ENIX account, please go here for more information:

http://support.na.square-enix.com/faqarticle.php?kid=67426&id=496&la=1