Test email is sent to test whether email messages can be successfully sent and received. Before you send test email, complete the following email configurations:
Run the mail command to specify the email recipient or CC recipient.
Run the mail sender command to specify the email sender.
Run the smtp server command to set the domain name or IP address of the SMTP server. If the SMTP server requires authentication, you also need to run the smtp authentication command to create a user name and password for the authentication.