this feature will send an warning email, inform system administrator that one of the wan ports was disconnected.
email alert – you can choose to enable or disable it to send a warning email.
email sender address – it is an email address which will send the warning email.
email (smtp) server address – it is an email server address the warning email will be sent to.
email recipient address – it is an email address of system administrator the email will be sent to.

settings – email alert