When you build criteria for a dynamic content rule, you can use relational table data to help filter certain contacts. The customized content displayed is based on the values listed within the database for each contact.
You cannot include relational table data when building dynamic content within a rule. Relational table data queries are not allowed and you do not see the Dynamic Content icon displayed within the Acoustic Campaign WYSIWYG editor when you are building content in a rule. However, you can use relational table data within a regular email body.