How to disable the request for customer email in sales receipts?

Question:

How can I disable the request for customer email in sales receipts. I don’t want to send or enter the customers email. I want to save Sales Receipts. And the transaction can’t save until I enter an email.

Answer:

On the Save and Send button, click the drop down arrow and use either Save and Close or Save and New. It also applies to Invoice.

save and send selector merge
save and send selector merge
save and send selector 2
save and send selector 2