Claim Listing functionality – how to send email to users when their claim has been approved or denied

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Unfortunately, the developers didn’t give you any hooks in their code to allow for customization without hacking it. But all is not lost – there are some hooks in WP that you could use to trigger your emails.

The ideal would be to trigger off the update_post_meta(). That function is simply a wrapper for update_metadata() which has lots of hooks in it.

Here’s an untested example of a direction you could go. Hopefully it gives you something to work off of.

/**
 * @param int    $meta_id    ID of updated metadata entry.
 * @param int    $object_id  Post ID.
 * @param string $meta_key   Meta key.
 * @param mixed  $meta_value Meta value. This will be a PHP-serialized string representation of the value if
 *                           the value is an array, an object, or itself a PHP-serialized string.
 */
add_action( 'updated_postmeta', function( $meta_id, $object_id, $meta_key, $meta_value ) {
    if ( 'ait-claim-listing' == $meta_key ) {
        if ( 'approved' == $meta_value['status'] ) {
            $email_to = $meta_value['owner'];
            $subject="Your approved email subject";
            $message="Your approved email message...";
        }

        if ( 'unclaimed' == $meta_value['status'] ) {
            $email_to = $meta_value['author'];
            $subject="Your unclaimed email subject";
            $message="Your unclaimed email message...";
        }

        $result = wp_mail( $email_to, $subject, $message );
    }
}, 10, 4 );

Keep in mind, this is untested and just a thought process based on the information in your question. You may need to make some adjustments to make it really work.

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