The field that is used to generate the email address when emailing an invoice is the Email field under the Bill To tab in the invoice in Adagio Invoices. It is not the Email field under the Invoicing tab in the customer in Adagio Receivables. The Email field in Invoices is populated with the Email field from Receivables at the time the invoice is created, but after the invoice is created, the two Email fields are independent.

If you create an emailable invoice without an email address, you will need to edit the invoice in the queue and add an email address in order to be able to send it. You can't email an invoice without an email address.

First one to respond with the correct number of times I used the word "email" in this reply gets emailed an award!