To send emails from Smart School, you need to configure Email Setting, for this go to System Settings > Email Setting. Currently Email is available for SendMail and SMTP delivery engine. If you want to send email through your Hosting Send Mail program then select SendMail email engine or to send email using any SMTP relay then Select SMTP email engine. You can use Gmail SMTP relay also by adding any Gmail account details but your Gmail account also seto for less secure device so SMTP engine can send email using Gmail SMTP relay.
Enter SMTP Username, SMTP Password, SMTP Server SMTP Port and select SMTP Security (TLS/SSL/OFF), SMTP Auth (ON/OFF) and then click on Save button.