specify the name of the list in subject field of the contact form

How can we specify the name of the list in subject field of the contact form ?
I have owner listing that have many listhow can they know which someone is talking about when reaching by mail ?
I receive a copy from the customer mail and I want to know about wich list it is ( for my statistics)
I’m running with contact 7 form. I’d like to know it for ninja form to.
Thanks

eg:
subject: you have an email from [customer-name] about[listing-name]

https://www.ads-software.com/plugins/wp-job-manager-contact-listing/