Were this me, I would do the following troubleshooting points:
1) Check your e-mail spam filter. I know I have accidentally marked an email as spam instead of deleting.
2) Double check your subscriptions
, and make sure they are set to "Instant Email Subscription"
3) Double check your email address
, and make sure your email address is correct.
If all those fail, well, I got nothing. That becomes a mod issues, unless someone else has a better idea...