I am quite certain that they did show up. I have upgraded both my machine
and my wife's machine, so I don't have Office 2000 installed right now.
However, we both used this feature. We could see outgoing read receipts in
the outbox, and they were moved to sent items after transmission. On many
occasions I changed my mind after clicking on the "yes" button to send the
receipt and simply deleted it from the outbox before selecting send/receive.

"Milly Staples [MVP - Outlook]" wrote:

They never showed up in Outlook 2000 or any other version. Were you
thinking of something else?

--
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, KenH asked:

| In Outlook 2000, after reading a message that requested a read
| receipt and accepting the request (sending the read receipt), a
| message would show up in my outbox briefly, then in the Sent Items
| folder. This was quite handy sometimes. In Outlook 2003, read
| receipts that I send all seem to be hidden. They don't show up in the
| outbox and they don't show up as a sent message. Is there an option
| to get the previous behavior?