On the contrary - I think the most reasonable interpretation of his words is that he did use it via emailing it. But like I said at the beginning, I could be wrong. It will be interesting to see what he says when he returns to the conversation.
> Once again, I reiterate, an agent processing email that rejects every single one passes the test that the OP created, but then it can't do anything useful either.
No one is contesting that point, only that it is applicable.
Making the behavior for "I disagree" and "this is erroneous" the same seems like a problematic design.