You can email forms and reports to customers directly from QuickBooks. You can also send email to customers from the Customer Center.
Click the Customers Center icon at the top of the QuickBooks window.
Click the Customers & Jobs tab.
Click a customer's name to open the Customer Information window .
Click the customer's email address.
Your email program opens with your customer's email address in the To field. If your customer doesn't have an email address in QuickBooks, their name will appear instead. If your email program cannot find a matching email address, you can enter the email address manually.
Prepare and send your email.