Contact Form ID Reference

I’m doing some work on the contact form and I’m running into an issue. I’m having trouble tracking down where all of the references for the email contact form function are stored.

I know that there is reference here:
essential-real-estate/public/templates/single-property/contact-agent.php
essential-real-estate/includes/class-essential-real-estate.php
essential-real-estate/public/partials/property/class-ere-property.php
essential-real-estate/public/assets/js/ere-main.js
essential-real-estate/public/assets/js/property/ere-single-property.js

What other pages am I missing?

Thank you