If you have multiple email addresses, entering any one will allow you to log in to the same customer account provided that you added the email addresses from within the MyAccount section. It is NOT advisable to set up different accounts for different email addresses for obvious reasons.
If you have never purchased anything on our site nor communicated with us in any way, then, you will not have an account on record. Once you make your first purchase, your account will be automatically set up. From here you may see your current orders, review your order history, add and remove email addresses to be associated with this account, set up measurement profiles, etc.
To set up an account with us, simply type in your email address and an account will be set up for you. Use the links on the left menu of the MyAccounts section to add any details, profile information, addresses and other specifics