Quick books says it can't deliver any of my invoices. All the email addresses are correct so that isn't the problem. Any suggestions please?

Hey tom64

Our engineers are aware of the server error and are investigating this with priority, we'll be updating this article when the issue is resolved. We apologise for the inconvenience caused, in the meantime as a workaround you can send the invoice manually by selecting 'Print/Preview', download the PDF and send via your own email.

Thanks!