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.
You can use this app in order to send an Excel report to your Dropbox account for example : http://apps.jotform.com/app/reports_to_cloud
Another way to achieve it will be integrating your form with Google Spreadsheet, refer to this guide in order to know how to integrate your form with it : http://www.jotform.com/help/228-How-to-Integrate-Form-with-Google-Spreadsheet
Unfortunately, there is no way to schedule an auto-delete of submissions, you can only delete submissions as soon as are received.
Please, feel free to contact us if you have more questions or need more help, we will be glad to assist you.