Hi, Mark

Thank you for the inputs. 

One step further, do you know if it is possible to set up the sales order with the new email address I entered as the memorized transaction? 

I tried but it didn't work. If I save the new email address I entered, then it will replace the original email address in the customer profile. 

If I do not save the new email address, it will show the email address in the profile when I click the "Email" again. 

Thanks.