How do I configure email accounts? What about Gmail accounts?
The settings to configure are in SMART Utility->Preferences->Notifications->Configure Email Options. The proper settings to enter here should be available from your email provider.
For Gmail accounts, the SMTP server is "smtp.gmail.com". Authentication is "Password", with the username and password the same as the one to log into Gmail. The connection is Custom Port 587, and "Use SSL" is checked.