WP_Mail-contact-form-action.php

<?php

Class ContactFormAction extends WP_AJAX{

  protected $action = 'contat-form';

  protected function run(){
        
    WP_Mail::init()
      ->to('[email protected]')
      ->subject('New contact from enquiry: {{name}}')
      ->template(get_template_directory() .'/emails/contact.html', [
        'time'    => date('Y-m-d H:i:s'),
        'name'    => $this->get('full_name'),
        'email'   => $this->get('email'),
        'message' => $this->get('message'),
      ])
      ->send();

  }
}

ContactFormAction::listen();