Provides access to properties which control when and how ESMTP Delivery Status Notification messages will be sent to the message sender.
The DeliveryNotificationOptions object containing properties and methods which allow the developer to specify ESMTP Delivery Status Notification (DSN) settings.
DSN is a better alternative to MailMessage.ConfirmReceipt since most mail servers support ESMTP DSN extension rather than Return-Receipt-To message header (which is set by MailMessage.ConfirmReceipt property).
Smtp Class | MailBee.SmtpMail Namespace