JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
I suggest that you sign up for a free account here: https://www.jotform.com/signup as this will allow you to receive more monthly submissions and you'll receive useful information about our service.
Regarding on how you can share your form by email. You can use the email embed option to do so.
You can enter the email address(es) to which you want to send your invitation.
Please give it a try and let us know how it goes.