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.
JotForm already has a validation tool to ensure that the email input is in the correct format. You can check the validation of your input box by clicking on the input box and in the main nav bar at the top there is a validation button.
For email verification, in addition to validation, JotForm has a widget called E-Mail Validator. The E-Mail Validator widget can be put on the page and this will prompt the user to confirm their email address. When user goes to verify their email address the form will send them an email with a link in it that can be used to verify.
I hope i helped answer any questions that you had about email verification and validation.
In addition, you can use the default email field, it has a couple of settings that you can use.
1. Add the email field found under Quick Tools. Click its Properties.
2. In the Properties field, you can set the "Confirmation" and "Disallow Free Addresses" to set a more reliable validation.
I hope that helps. Do let us know if you need more information on this.