There are many posts in this section(MyHouse Online) regarding e-mail problems please read them and try what is suggested there if nothing works then post again stating what all you have tried and the results!
Also have you tried
X10dispatcher yet? it has these options plus more that AHP doesn't.
there seems to be an issue right now with the way AHP is sending e-mails the settings for the transmition doesn't stick and that could be your problem if so X10dispatcher could be used until a update for AHP is issued!
It is easy to send a text message to your phone if your cell phone provider will share that info if not search the net there are sites that provide this service!
If you have a voice modem in your PC you can try
AlertDialer it will send a voice alert and allow you to reply with an x10 command(via touch tone)!