Regaining access to a Battle.net Account when the email is not accessible.
What to do if you are receiving emails for another player with a Gmail similar to yours.
How to swap email addresses between two accounts
Information regarding steps you can take if your email address is already in use on an account.
How to reset your Diablo II (2000) password or change the email address registered to the account.
How to update the email for Parental Controls.
How to change or update a Battle.net account email address.
How to correct an email mistake when creating or updating your Battle.net account
What to do if you cannot log in after you changed your password
Information on where to update your Activsion Account Email