public boolean isComplete() {
		if (from == null    || from.length()==0) {
			System.err.println("doSend: no FROM");
			return false;
		}
		if (subject == null || subject.length()==0) {
			System.err.println("doSend: no SUBJECT");
			return false;
		}
		if (toList.size()==0) {
			System.err.println("doSend: no recipients");
			return false;
		}
		if (body == null || body.length()==0) {
			System.err.println("doSend: no body");
			return false;
		}
		if (mailHost == null || mailHost.length()==0) {
			System.err.println("doSend: no server host");
			return false;
		}
		return true;
	}