Thanks for the swift response. I hope I was the catalyst for the dialogue between Consultant and Softrak.

Instead of a data structure change, if the customer number had room for 40-50 characters, that would allow unique emails to be used at that point. From there, a conversion can take place from the 6 digit numbers to the email address.

Im sure that Im oversimplifying it, however, I do find this request to be of benefit to both Softrack and my company. I better include that it could benefit many online retailers too!