May I know how many time was my email address on the bounce list?

I logged in to the account and noticed that the email is on a bounceback list and therefore has not been able to be delivering emails to the address. 

Could you please confirm with me how long that has been the case, I am going to get in touch with them soon and just want to ask you these questions before hand. the email was ofnorthbeach@gmail.com

Thanks for your help, sorry for so many questions. 

It's not possible to check when the email address to our bounce list, but you may find when the emails started to bounce, please check this guide: https://www.jotform.com/help/293-How-to-View-All-Your-Form-Email-History 

Here are some guides that will help you avoiding bouncing and removing the address from our bounce list as well: 

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

https://www.jotform.com/help/262-How-to-Remove-Your-Email-Address-from-Bounce-List 

I hope this helps.