<A target="_blank" href="http://www.notesonproductivity.com/ICA/NOP.nsf/dx/follow-up-how-to-stop-sending-notes-email-to-unintended-recipients-by-disabling-the-recent-contacts-feature-in-notes-88.5x">Eric Mack revisits this handy feature in Notes 8.x.</A> It seems the client is eager to send mail to all your recent contacts. He provides instructions on shutting it down.