In order to send a letter to a specific set of customers you must first insert an asterisk (" * ") into the Customer field and then insert a Customer Category into the Category field. If you do not select a Category then the system by default will send a mail to all customers as indicated by the " * ". Selecting a Category will instruct the system to send the letter to all Customer who belong to the Category indicated. As well, you can further segment your list by also selecting Customer Class (Cust. Class) and Contact Class.

Kind regards,
HansaWorld Global Support