"replyto" in "Notification.SendMail" works improperly

It is because the getReplyTo() function in the MimeMessage class never returns null. It returns the current value of the "Reply-To" or a value "From":

  public Address[] getReplyTo() throws MessagingException {
	Address[] a = getAddressHeader("Reply-To");
	if (a == null || a.length == 0)
	    a = getFrom();
	return a;
    }

In consequence the "replyto" is added to "from" and saved in "Reply-To" in the addInfoInMessageHeader function.
That is a problem for some emails portals (i.e. lotus iNotes), because they use the first value i.e. "from" in this case.