As I mentioned bore, the header is only present on the incoming messages, it
will nto be present on the mesages in your Sent Items folder.

--
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
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"Salad" wrote in message
...
Dmitry Streblechenko wrote:
No, PR_TRANSPORT_MESSAGE_HEADERS is only present on the mesgaes received
form an SMTP server.
I am not sure what did not work for you: are you trying to set a header
on an outgoing message?


No. But I can't see/view an internet header on an outgoing message. I
click on the message, right click on it, select Options, and a dialog box
with the caption Message Options is presented. At the botton it has a
text box with the caption "Internet Headers" but it's blank. This is the
same in both O2003 and O2007. My O2003 goes thru a POP-3 account, the
O2007 thru an Exchange server.

I was hoping I could get a link from an outgoing to an incoming message
where a link between the two apparent.

In my original post I mentioned one could but some sort of keyword in the
subject or body or both but the person could remove that info in a
response. I figured a header would be safe area to link the two messages.

Years ago I heard mail order companies, when hardcopy was used, would put
something like Dept 123 or J Smith on the envelope to identify a mailing.
I figured a header would be a viable way of doing so as well.