You cannot get email notifications specifically to post you have made, but you can subscribe to a topic and you will receive email notifications whenever someone posts to a topic you have posted in (or any other topic you are particulary interested in). You can take yourself off of a subscribed topic any time you want.
To subscibe to a topic, you can do what Phil mentioned, or you can click the red button at the top of a post that says "Subscribe". This button is above the black bar above the post and is with the buttons "Reply to Topic" and "Favorite".
When you subscribe to a topic, you can later unsubscribe by either hitting the "Unsubcribe" button (the "Subscribe" button turns into this after you subscribe) OR you can manage all of your subsciptions and favorites and view your posts from the home page by hitting the "My Posts" link in the left hand column. This will take you to a page that has all your posts listed and in the left hand column on that page, there is an option to look at "My Subscriptions". Clear as mud?
I miss email notifications to my specific posts too, but perhaps it is something that will be addressed in future software releases. If you have any further questions or if this makes no sense whatsoever, I would be happy to try to explain it better.
Dawn