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.
There are actually two options that you can use to add a sender email.
Option 1: You can add your email address as a sender using the verification code. Here's a guide that you can follow: https://www.jotform.com/help/238-How-to-Add-a-Custom-Sender-Address-to-an-Email-Alert. Please note that the emails will still be sent from our mail servers.
Option 2: If you have your SMTP details, then you use those and set your sender address. Here's a guide that you can follow: https://www.jotform.com/help/244-How-to-Setup-SMTP-for-a-Form. On this method, the notification will be sent to your own mail server because of the SMTP details you have.
To edit or delete your sender emails, you can follow this guide: http://www.jotform.com/help/241-How-to-Edit-Delete-the-SMTP-Emails. In your case, you should be able to add the verification code directly in the email wizard where you added the sender email in the first place.
I hope that helps.