Emails sent to a specific custom field

Hi

We are using the theme Listable and we have the WP Job Manager Field Editor plugin

We followed this tutorial to have a form on every page and this is working 100% fine with Contact Form 7. The emails are being sent to the “listing owner”, the person who created the listing.

However, we would like the email messages to go to a custom email ID that will be added on each listing. Perhaps we could use the custom fields above for this? Any idea how to achieve this task?

Thank you