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I checked your forms and I can see you are using three email addresses to receive email notifications, only one of them is not receiving emails from your forms, it is : firstname.lastname@example.org
It's in our bounce list, I have removed it and you should be able to receive your emails now, also I would like to share you this guide : http://www.jotform.com/help/208-How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues
And the link to whitelist our IP Addresses as well : http://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses
Also, you can check and remove your email addresses from the bounce list, just follow this guide : http://www.jotform.com/help/262-How-to-remove-your-email-address-from-bounce-list
Hope this helps.
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