Gets the actual message size on the mail server.
The actual message size in bytes.
This property indicates the actual message size and may not be equal to the value of Size property, which indicates the size of the received message. For instance, if only the message headers were received from mail server, Size property will contain the size of the message headers. However, SizeOnServer property will still return the size of the entire message.
The sample is available in Size property overview.
MailMessage Class | MailBee.Mime Namespace | Size