Map ht = new Hashtable();
ht.put("X-Priority", "1");
ht.put("Disposition-Notification-To", "me@home.com");
ht.put("X-Mailer", "Sendmail");
for (Iterator items = ht.entrySet().iterator(); items.hasNext();)
{
Map.Entry entry = (Map.Entry) items.next();
String strName = (String) entry.getKey();
String strValue = (String) entry.getValue();
this.email.addHeader(strName, strValue);