How to send email notification of submission to custom email address?

The submit button goes to the email the user enters. I want it to go to an address of my choosing. The form will be used in a GetResponse Email list.

Based on what you have mentioned, you have email autoresponder. This is the email template that is being used to send email notification of the submitted data to the person that was filling out the form.

On the other hand, what you are after is Email notifier / Email notification

This will allow you to have the emails sent to you or some other email address of your choice.

I would suggest to check the following guides:

Setting Up Email Notifications

How to Delete Notifications/Autoresponder (since you mentioned that you do not want to send this type of email)

Creating a Form Autoresponder (if you decide to add it back so that people submitting your form, know that the submission was received)

Do let us know however if you have any questions and we would be happy to assist.