If you are getting an Authentication failure when trying to email from QuickEMR just follow the steps below

Log into your Gmail account and from there go into your account settings.

In account settings go to Sign In and Security and then go to Device Activity and Security Events

From there go to Recent Security Events. You should see attempted connections located in San Diego.

Click the "This Was Me" button.  This will now authenticate any emails sent from QuickEMR using your gmail account.