The QuickBooks could not connect to the Email Server error manifests when you are unable to send important company related emails, which could actually have very serious consequences. Your productivity may suffer, and it can even lead to the loss of important data files. The most frequent cause of QuickBooks Desktop Webmail's inability to generate invoices is attributed to the improper settings of the webmail preferences.
Many users encounter the QuickBooks Could Not Connect to Email Server Issue when attempting to send emails using the QuickBooks Desktop application. Carefully read the instructions in this article to learn more, and get rid of the issue quite easily.