The current implementation of read receipt and delivery receipt does not fulfill the needs we have to such a functionality.
According to the older thread "Read receipt shows wrong sent time" it is "by design" that the read receipt does not contain the sending time of the original message, instead it contains (quite senseless from my point of view) the time when the receipt itself has been sent.
The only information in the read receipt is the subject of the original mail which may be identical in longer mailthreads to several (dozends of) mails.
So in this implementation you are not able to find out to which message a read receipt really relates.
The delivery receipt does contain an "ID" but it also is unclear for a outlook user where this ID does belong to because you cannot find this ID anywhere in the sent mail.
So we cannot prove at all if a single mail in a thread has been read or not.
The printout of such a receipt does not have any information that can be used in a meeting or discussion.
Since this situation obviously lasts for more than two years I'd like to ask how I can get a working read-receipt-functionality for professional eMail-handling? Didn't I see or recognize something obviously?
Currently I have a quite annoyed customer who wishes back his Outlook Express!!!! I invested some time to make him change to outlook and now he is missing some professional features.
Thanks for any help in this.