Customer Messages shown within either EzInvoice or EzReceipt are functions of your QuickBooks Company File. To Add, Delete, or Edit any of these methods, please follow the below from the main screen in QuickBooks.  From the Home Screen > Lists > Customer & Vendor Profile Lists > Customer Message List


Once inside the Customer Message List, you can Add, Delete, or Edit any of your Customer Messages by Clicking on the Customer Message button located in the lower left hand side.