Unread Property (MessageFilter Object) 

The Unread property sets filtering on whether a message has been read or not. Read/write.

Syntax

objMessageFilter.Unread

Data Type

Boolean

Remarks

A message s Unread property is True if it has not been read by the current user.

The Unread property corresponds to the MSGFLAG_READ flag not being set in the MAPI property PR_MESSAGE_FLAGS.