Ken Slovak - [MVP - Outlook] wrote:

The MAPI property PR_LAST_MODIFIER_NAME shows who last modified any
Outlook item, but it's not exposed in the Outlook object model or in
the list of fields you can use for views or the Field Chooser. It's
only available in low level accesses such as Extended MAPI or CDO
1.21 or Redemption and that's code only.

Even Outlook 2007 doesn't expose that property to the UI.

Hm. Why keep track of an invisible property?
--
Brian Tillman