In the webassist/email/templates folder is the template file for your email
add this code at line 1 of that file:
<?php
global $RecipArray;
global $RecipIndex;
?>
then replace each instance of the code that references your recordset:
<?php echo $row_RecordsetName['yourColumnName']; ?>
with:
<?php echo($RecipArray[$RecipIndex][0]["yourColumnName"]); ?>
where "RecordsetName" is the name of your recordset and "yourColumnName" is the name of the recordset column.