MemberPress: Filter Email Recipients Based on Expired Memberships

add_filter('mepr-wp-mail-recipients', function($recipients, $subject, $message, $headers) {

    if (strpos($subject, 'Subscription renewal') !== false) {

        foreach ($recipients as $key => $recipient) {

            // Extract the email address from the recipient field

            $regExp = "/<([^>]+)>/";

            preg_match($regExp, $recipient, $matches);

            $recipient = $matches[1];

            $wp_user = get_user_by('email', $recipient);

            if ($wp_user) {

                $user_id = $wp_user->ID;

                // Get the MemberPress user object

                $user = new MeprUser($user_id);

                // Retrieve all subscriptions (active and expired)

                $all_subs = $user->active_product_subscriptions('ids', true, false);

                // Retrieve only active subscriptions

                $active_subs = $user->active_product_subscriptions('ids', true);

                // Calculate expired subscriptions

                $expired_subs = array_diff($all_subs, $active_subs);

                // If the user has expired subscriptions, remove them from the recipients

                if (! empty($expired_subs)) {

                    unset($recipients[$key]); // Exclude the recipient

                    break;

                }

            }

        }

    }

    return $recipients;

}, 9999, 4);