is there a way a copy of a completed form can be automatically emailed to users?

Hello,

You can add an autoresponder email alert on your email alert settings. This type of email alert will send the completed information back to the person who submitted the information. Just make sure that you have an email address field in your form and use that field as reference as the 'address to' setting on your autoresponder.

You can check out this guide to know how to setup an autoresponder email alert: https://www.jotform.com/help/26-Setting-Up-an-Autoresponder-Email

You may also check this chapter of the user guide to know more about form emails: https://www.jotform.com/help/chapter-4-Form+Emails