问复选框在nms formmail中不起作用

EN

<form method=POST action="/cgi-bin/FormMail.pl">
            <input type=hidden name="recipient" value="mail@hotmail.com">
            <input type=hidden name="subject" value="subject">
            <input type=hidden name="redirect" value="-">
            <p>First Name:<input type="text" name="FirstName" /></p>
            <p>Last Name:<input type="text" name="LastName" /></p>
            <p>E-Mail:<input type="text" name="email" /></p>
</label>

  <input id="checkbox1" type="checkbox"><label for="checkbox1">Printing

  </label>

  <input id="checkbox2" type="checkbox"><label for="checkbox2">Web Development

  </label>
 </form>