Notifly in WordPress

WordPress sends almost all important events through the hook system (do_action, apply_filters). You can hook into them from a tiny mu-plugin — no admin panel, no visual editor.

Installation

1. Create the folder wp-content/mu-plugins/ if it doesn’t exist.
2. Put the file notifly.php there (see below).

mu-plugins are loaded automatically on every request and are not disabled by updates.

Basic notifly.php file

<?php
/**
 * Plugin Name: Notifly notifications
 * Description: Push notifications about key site events.
 */

if (!defined('ABSPATH')) exit;

if (!function_exists('notifly_send')) {
    function notifly_send(string $title, string $message, int $priority = 5): void {
        $url   = defined('NOTIFLY_URL')   ? NOTIFLY_URL   : (getenv('NOTIFLY_URL')   ?: '');
        $token = defined('NOTIFLY_TOKEN') ? NOTIFLY_TOKEN : (getenv('NOTIFLY_TOKEN') ?: '');
        if (!$url || !$token) return;

        wp_remote_post("$url/message?token=$token", [
            'timeout' => 5,
            'headers' => ['Content-Type' => 'application/json'],
            'body'    => wp_json_encode([
                'title'    => mb_substr($title,   0, 200),
                'message'  => mb_substr($message, 0, 1500),
                'priority' => $priority,
            ], JSON_UNESCAPED_UNICODE),
        ]);
    }
}

In wp-config.php set:

define('NOTIFLY_URL',   'https://your-notifly.example.com');
define('NOTIFLY_TOKEN', 'AGdjfk_L.dKe8q');

New comments

add_action('comment_post', function ($comment_id, $approved) {
    $c = get_comment($comment_id);
    if (!$c) return;
    $status = $approved === 1 ? 'опубликован' : ($approved === 0 ? 'на модерации' : 'спам');

    notifly_send(
        title:    "💬 Комментарий ($status): " . wp_trim_words($c->comment_content, 8),
        message:  "Автор: {$c->comment_author}\n" .
                  "Пост:  " . get_the_title($c->comment_post_ID) . "\n" .
                  "Текст:\n{$c->comment_content}\n\n" .
                  "Управление: " . admin_url("comment.php?action=editcomment&c=$comment_id"),
        priority: $approved === 0 ? 6 : 4,
    );
}, 10, 2);

New users

add_action('user_register', function ($user_id) {
    $u = get_userdata($user_id);
    if (!$u) return;
    notifly_send(
        title:    "👤 Новый пользователь: {$u->user_login}",
        message:  "Email: {$u->user_email}\n" .
                  "Роль: " . implode(',', $u->roles) . "\n" .
                  "Профиль: " . admin_url("user-edit.php?user_id=$user_id"),
        priority: 4,
    );
});

Core / plugins available

add_action('upgrader_process_complete', function ($upgrader, $hook_extra) {
    $type = $hook_extra['type']   ?? 'unknown';
    $action = $hook_extra['action'] ?? '?';
    notifly_send(
        title:   "🔄 WordPress: $action $type",
        message: "Сайт: " . home_url() . "\nДетали: " . wp_json_encode($hook_extra, JSON_UNESCAPED_UNICODE),
        priority: 5,
    );
}, 10, 2);

WooCommerce: new order

add_action('woocommerce_new_order', function ($order_id) {
    $order = wc_get_order($order_id);
    if (!$order) return;
    $items = [];
    foreach ($order->get_items() as $item) {
        $items[] = "• {$item->get_name()} × {$item->get_quantity()}";
    }
    notifly_send(
        title: "🛒 Новый заказ #{$order->get_order_number()} — " .
               wc_price($order->get_total()),
        message:
            "Покупатель: {$order->get_billing_first_name()} {$order->get_billing_last_name()}\n" .
            "Email: {$order->get_billing_email()}\n" .
            "Телефон: {$order->get_billing_phone()}\n" .
            "Способ оплаты: {$order->get_payment_method_title()}\n\n" .
            "Состав:\n" . implode("\n", $items) . "\n\n" .
            admin_url("post.php?post=$order_id&action=edit"),
        priority: 8,
    );
});

PHP-cron / WP-cron failure

WP-cron runs on every HTTP request. If there are no requests, scheduled tasks don’t run. Set up a “canary” — a daily event that should arrive in Notifly:

register_activation_hook(__FILE__, function () {
    if (!wp_next_scheduled('notifly_daily_canary')) {
        wp_schedule_event(time(), 'daily', 'notifly_daily_canary');
    }
});

add_action('notifly_daily_canary', function () {
    notifly_send(
        '🟢 WP-cron alive',
        'Сайт ' . home_url() . ' жив. Время сервера: ' . current_time('mysql'),
        2
    );
});

If there’s no notification within 25 hours — something is wrong with the site’s cron.

Throttling

To avoid receiving 100 notifications in 5 minutes during a spam wave:

function notifly_throttled(string $key, int $cooldown, callable $fn): void {
    $cache_key = "notifly_throttle_$key";
    if (get_transient($cache_key)) return;
    set_transient($cache_key, 1, $cooldown);
    $fn();
}

add_action('comment_post', function ($id) {
    notifly_throttled("comment_$id", 60, function () use ($id) {
        notifly_send(/* ... */);
    });
});

Benefits

• See the live pulse of the site. Every order, every registration — push notifications.
• No email in spam. Notifly bypasses mail filters.
• No need for paid plugins like Mainwp, Jetpack or specialized “alert” add-ons.

What to improve next

• Separate Notifly channels for different sites in a multisite network.
• Tags in extras: you can filter messages in the Notifly admin by tag wc_order or comment.
• “Confirm” / “Mark as spam” buttons via your own REST endpoint.