added email recipients not receiving emails when form is filled out.

The email recipients might be in our bounce list, please follow this guide in order to remove them yourself: https://www.jotform.com/help/262-How-to-Remove-Your-Email-Address-from-Bounce-List

To prevent further issues, you might need to apply your own SMTP settings, here is a more detailed guide about it:

https://www.jotform.com/help/208-How-to-Prevent-Email-Bouncing-Related-Issues