Well, you didn't provide your settings in the original post, so not sure how you expect me to tell which ones prevents you from getting a mail?
If those 2 settings in your latest reply are all limitations you set up in your notifier, then it must be over 50km. If the cache is published after you set up the notifier, and the owner is the one you specified, and it is within 50km of your house, you might have mispelled the owner name, or there might be a bug with the notifier.