I am using SmtpClient to send a message through a gmail account, I set DeliveryNotificationOptions to DeliveryNotificationOptions.OnSuccess, the message sent ok, but there is no delivery notifiacton. I also tried hotmail, still no delivery notification. However the same code works fine on outlook exchange server.
any ideas? Cheers
Harry
There is no gaurantee that any mail server will support this option, you cannot count on it at all. If hotmail and gmail respected this can you imaging how useful it would be to spammers.