The property you're looking for isn't exposed in the Outlook object model.
It's in PR_LAST_VERB_EXECUTED (0x10810003), where replied to is 102. You'd
need to be using CDO 1.21 or Extended MAPI or a MAPI wrapper such as
Redemption (www.dimastr.com/redemption) to get at it.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Absolute Beginner's Guide to Microsoft Office Outlook 2003
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm


"Geoff" wrote in message
...
Which Mailitem property stores the fact that a received Mailitem has been
replied to?

I need to distinguish programatically between duplicate Mailitems:

1. Some mailitems show "You replied on ... Click here to find all
related messages".
2. Duplicate mailitems in the same folder are exactly the same except
they do not show the above message.

I have written a VBA program that scans thousands of emails in multiple
stores and folders. The program finds duplicate Mailitems in the same
folder (by comparing SenderName, To, ReceivedTime, SentOn, Subject and
Attachments.Count). I want to delete the duplicates that don't show the
"You replied on..." message. I hope there's a property that stores this
"replied" information. Does it exist? Is there a way to distinguish?

TIA
Geoff