Hi TBBonnetts A number of email providers have been installing updates which have prevented emails/invoices from QuickBooks to be received. Our engineers are aware of the issue and are liaising with the email providers to resolve the issue. In some cases affected customers have added do_not_reply@intuit.com to their email providers white/safe sender list or sent a blank email to do_not_reply@intuit.com, which should trigger the email domain to recognise the @intuit domain as a trusted site and they have then been able to receive re-sent invoices.. If this doesn't work then you can download the invoice as a PDF or use the save and share link option within the invoice, if you're using a small business product, and send the PDF or link from your own email provider.