lately there has been like a 2 hours delay, i'm using gmail, and there is just a delay for some reason. it collects and sends it as a batch, just not all of them.
if your using some other ISP, they may have nuked your mail finally. its pattern based, and it will see it as spam and remove it before you can see it.
----Mike Savad
http://www.MikeSavad.com