Hi,

In C3 and D3, use the following array functions and copy down

=INDEX(Mailing!$F$2:$F$4,MATCH(A3&"Y",Mailing!$A$2:$A$4&Mailing!$G$2:$G$4,0)) =INDEX(Mailing!$F$2:$F$4,MATCH(A3&"Y",Mailing!$A$2:$A$4&Mailing!$H$2:$H$4,0))

make sure to confirm an aray with CTRL, SHIFT and ENTER.