The new Send Invoice feature no longer has access to your contact list from your email client. You can manually add the email address to the customer record. Then the email will be sent to all email contacts in the customer record.
1. From your computer, log into the Web Dashboard.
2. Click on Customers.
3. Click on customer name to edit.
4. Click the pencil icon to edit the customer record.
5. Here you can add additional email addresses for this customer. You will add a comma after each email address you enter.