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.
Thank you for contacting us.
What are you referring with "Global Autoresponder " ?
You can set an autoresponder by following this guide, it will send the email to your submitter, if you want also receive an email notification, you should set an email notification, this email will be sent only for the email addresses that you specify : http://www.jotform.com/help/25-Setting-Up-Email-Notifications
If it does not help, please, provide us more details, we will be glad to assist you.
Is it possible to use one responder for several forms for easier editing
No that can not be possible, you can only set one autoresponder per form, if you want to make some changes then you need to open the form and then edit the template of the autoresponder.