The error message "QuickBooks Unable to Send Emails Due to Network Connection Failure" denotes a situation when QuickBooks has trouble sending emails, frequently as a result of erratic or failed internet connectivity. Invoices, reports, and statements cannot be sent through email as a result. For smooth email communication from QuickBooks to resume, users should make sure their network connection is steady. 1.855.738.2784 QuickBooks Experts Team is available right away if you need help.