What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Unfortunately no, it is not possible to block on email address on the form. What you can do i to setup a filter on your email software. So, if the sender is that person the email would be sent to trash automatically.
You can also add a captcha. That might possibly slow down submissions. (Captcha is available under Power Tools.)
You can also enable unique submissions from Preferences. So, a user can only make a single entry.
I hope this helps.
Thanks for responding, but I'm lookingfor IP blocking, not e-mail. an E-mail actually can be blocked, by creating a hide rule. Just set it to if (e-mail) is (address) then hide: Submit button. It's pretty hard to submit it when there is not button.
However, this is not what I want. I want an IP blocker or rule option. Thank you anyway.
Does anyone else know of a way?
You can actually capture the IP address of the user who submitted the form. You can find this IP field in the notification email template
BUT the banning or blocking of IP address is not doable in the form builder. You cannot create condition logic for this since IP addresses are only checked/recorded after submission process.
The easier way to do it is on your web server. You can blacklist IPs that goes to your website/domain where the form is embedded.
In theory only, I think you can achieve also if you will use 2 forms and use the Send Post Data feature of the form. Something similar to what was done here https://www.jotform.com/help/213-Send-POST-Data-From-JotForm-Using-PHP-in-Custom-Thank-You-Page
In the 1st form, you can capture the IP address. So, on the 2nd form (as if it is the main form), you can pre-populate a hidden field using pre-populate URL parameter. Once the user opens the 2nd form, the IP address is recorded already. Then, use the condition logic to hide the submit button base on the value of the hidden field (the IP address form URL param)
I know its kind of confusing. =) I'll try to create a test form base on this theory. I'll update you if it works.
Hope this help. Inform us if you have further inquiry.
We are very proud to announce that our team of developers have released Jotform Webhooks, this feature would replace Send Post Data + Custom URL Thank You Page workaround in order to help you transfer forms data to your own database using your own script codes
Please find out more about it here