Adding a copy of the page you are working on is helpful when we are asked to debug it. Also please open a new thread for new questions so that these threads aren't dirtied with multiple issues making them more difficult to find.
One possible problem is the order of the server behaviors on the page... maybe it is redirecting to another page before the email is sent. Another possible issue is bad FROM settings. Another possible issue is an incorrect trigger setting. Another possible issue is that it is sending but SPAM filters are preventing you from getting it.