I'm glad to assist you, jon85.
You can add a second email in the customer's detail by separating the second email with a comma.
Here's how to:
- Click on the Sales tab.
- Click on the Customers tab.
- Select the customer name you wanted to add the second email.
- Click the Edit button.
- Under the Email field, enter the second email address separated by a comma.
- Click Save.
Once done, when you create and send a sales transaction for the customer the email address will automatically be populated based on the saved email address in the customer's profile. Here's also a handy link you can check on how to Email a sales form or report to multiple email addresses.
Let me know if you need any help. Have a nice day!