Code
mail:
to : kungphoto@qq.com # Mail recipient
from : # Some hosts require a 'FROM' address on the same domain
subject : %domain% | New message from %name%
host : # SMTP Hostname | Enable SMTP and fill the details below
SMTPAuth: # SMTP Authorization : true|false
username: # SMTP username
password: # SMTP password
SMTPSecure: # SMTP secure protocol | tls|ssl|(empty)
port : # SMTP port | 25|587|465
debug : # Debug mail true|false