Many times senders requesting a read receipt where my code stops processing inbox until I press <Y/N> on the pop-up read receipt box (MSO). Is there a way to auto-respond to those requests?

CodePudding user response：

You can check out the MailItem.ReadReceiptRequested property which returns a boolean value that indicates true if a read receipt has been requested by the sender. It is read-only for sent email items.

The Outlook object model doesn't provide anything for responding to such requests.

CodePudding user response：

Not in the Outlook Object Model.

You can do that on the Extended MAPI level (C or Delphi only) - call IMessage::SetReadFlag() - pass 0 to send a read receipt or SUPPRESS_RECEIPT (1) constant otherwise.

If Redemption is an option (I am its author), it exposes the RDOMail.MarkRead method that takes a SuppressReceipt Boolean parameter.