How do I automated email receipts from payments?

Hi there, 

Normally, once the customer used the payment gateways there will be a transaction email sent to them once the payment is completed.

In JotForm, you can create an auto-responder email. So once the customer filled up the form, JotForm will send an email to the customer using the email address on the submission. This auto-responder notification can be customized.

Here's a guide on how to create an auto-responder notification.

If you want to include a invoice type numbers, please use a unique ID field. Please check this guide on how to add custom unique IDs to your form submissions

Hope this helps. Let us know if you need any help.

Thank you.