Store Elementor form submissions using a custom post type

functions.php

<?php
// place this code into you child theme's functions.php file

// Do you use Advanced Custom Fields? Uncomment the next row, otherwise the custom fields meta box doesn't show up in your edit post screen
//add_filter('acf/settings/remove_wp_meta_box', '__return_false');

add_action( 'init', 'fws_elementor_submissions_post_type' );
function fws_elementor_submissions_post_type() {
    $args = array(
        'public'    => false,
        'show_ui' => true,
        'label'     => __( 'Form submissions', 'textdomain' ),
        'menu_icon' => 'dashicons-feedback',
        'supports'  => array( 'title', 'custom-fields' ),
        'capabilities' => array( 'create_posts' => false ),
        'map_meta_cap' => true
     );
    register_post_type( 'elem_forms_submit', $args );
}

add_action( 'elementor_pro/forms/new_record', function( $record, $handler = null ) {	
	$subject = $record->get_form_settings( 'email_subject' );
	$my_post = array(
		'post_title' => $subject,
		'post_type'  => 'elem_forms_submit',
		'post_status'   => 'publish',
		'post_author'   => 1
	);
	if ($post_id = wp_insert_post( $my_post )) {
		$raw_fields = $record->get( 'fields' );
		foreach ( $raw_fields as $id => $field ) {
			update_post_meta( $post_id, $id, $field['value'] );
		}
	}
});

Form submissions are stored now by Elementor.
Tip! Use this code example (with some changes) if you need to build a front-end submission function with an Elementor form.