How does etc cancel sending email notifications?

Cannot cancel sending. ETC, the full name of non-stop toll collection system, is the most commonly used road and bridge toll collection method. The system needs email notification, so it cannot be cancelled. E-mail refers to documents processed by delivery. The process of mail delivery is called "postal service", and the institution or system engaged in postal service is called postal service. There are two kinds of mail: domestic mail and international mail.