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.
It is not recommended to embed the form in an HTML email. Most email providers does not support script in HTML email. You might be able to send it but the recipient provider might block it, tag it as a spam or tag it as a malicious email.
You will also be having a hard time designing it because there are email provider that doesn't allow external stylesheets. JotForm is using external stylesheets and scripts.
I would recommend you sharing or emailing the forms direct link instead. Here's a guide: How-to-Send-a-form-via-email
Let us know if you have any questions. Thank you.