For Define Email Text to be able to use the CON fields instead of the STU fields when creating the letters. Currently it uses the STU for NM so if a Contact changes their Contact information and in Define Email Text if you have it set up as Dear [NM] it will say Dear NM (coming for the STU) even if it is changed by someone who's name is not on STU. You should be able to address the letter to the person who made the changes to their account using CON.NM