As someone said in your other thread, you can add
www.cabochon.com to a list of 'approved' sites or something of the sort, and that may fix your problem. Another possibility is what Durango/Kabroz said.
Normally I get my e-mails instantly. By the time I get to my inbox to check for them they're there. So yes, it's unusual you're not receiving yours but other people have had similar problems in the past usually having to do with their e-mail provider's settings. Check your spam, look for an "approved list" you can add to, or try an e-mail with a different provider. Other than that I don't know either. Hope this is of at least some help.