PM not getting through?

I replied to an add earlier today, recieved an e-mail through my regular e-mail. I did not recieve a PM through Amart, am I supposed to? Or do PMs only work for the intial response.

if you respond normally to an ad using the respond button link, you then have the choice of receiving a copy of your response sent to your email (if you check that little box).
however, if you send a PM, to the seller, or another member for whatever reason, by clicking the send private message link on their profile page, it is just that, a PM, a private message, and they will recieve it privately in their astromart message inbox, and not thru an email (and you won't receive a copy).
and you will recieve a PM, only if a memeber sends you a PM. which is different than a response to an ad. or a response to a response. by email.
hope that helps, rather than confusing more

I attempted to get your attention with two PMs a couple weeks ago to which I received no reply.