I think I saw something about this on one of the discussion boards but it hadn't been responded to in 6 months.  We need to be able to use other addressee/salutation fields when using the NXT Email Marketing feature.  The Primary Salutation might be John and Barbara but if they have different email addresses we have a salutation specifically for email.  So jsmith@gmail would have a John email salutation and bsmith@gmail would have a Barbara salutation.  We want to make sure these look personalized so if we're need to be able to use the appropriate salutation.