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.
First of all, we are sorry for the inconvenience. The problem is about that there is no sender detail for your notification mails. Some e-mail providers reject mails which sent with no sender information. Please try to add sender informations to your notification mail by following these steps:
1- Click EMails on Builder window, and choose one of your notifications
2- Click Reply-To and Recipient Settings
3- Add Sender Name and Sender E-mail (e.g. firstname.lastname@example.org) to the associated fields
Please let us know is the problem still persists.