I have used QBO since 2014.  I have it set up to copy all invoices to my email.  I did not receive an invoice email Friday. I tried unchecking the box to send me a copy, closing QBO and going back in rechecking the send me a copy box. I then resent the email. Still no copy to me. I checked with my customer and they had not received it either. I printed the invoice to .pdf and emailed it to the customer. It was after QBO customer support closed.