Pre-fill form before emailing

Is there a way to send a form to someone that has pre-filled data?

I want to create a form and have most or all of the data filled in, then have the customer electronically sign the document.

Is that possible?

Yes, you can achieve this by using a text field. You can type in all the details in the field and then add an E-Signature widget at the end.

If you are adding terms and condition, you can also use terms and condition widget as well:

You can also refer to some of the available templates of contract forms here: https://www.jotform.com/pdf-templates/contract

Let me know if you need any further details or have any questions.

Can I change the information each time I send out the form would it be the
same information on the form every time
...

To clarify, do you want to send a form with populated data to your form user?

You may do so by using the populate.io app. You will be using URL parameters to populate the fields.

Here is a guide:https://www.jotform.com/help/71-Prepopulating-Fields-to-Your-JotForm-via-URL-Parameters

You change the data in your field by using the app.

Please give it a try and let us know if you have further questions.