How to configure opencart with a Gmail account and google apps Gto to System-> Settings Click on the "Mail" Tab Configure with the following option (change user and password accordingly): Mail Protocol: SMTP SMTP Host: ssl://smtp.gmail.com SMTP Username: youremail@gmail.com SMTP Password: yourpassword SMTP Port: 465 SMTP Timeout: 6 Remember also to change the main email address in "general" (tab) settings with youremail@gmail.com (and not other emails otherwise they could be blocked).