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Assuming you are using a self-hosted WordPress site, you'll need to install the Push Notification plugin for WordPress. This will allow you to send push notifications to your subscribers whenever you publish a new post. Once the plugin is installed and activated, you'll need to configure it by entering your App ID and App Secret (which you can get from your push notification service provider). You can also specify which post types should trigger a push notification, as well as the frequency at which notifications should be sent. Once everything is configured, your subscribers will start receiving push notifications whenever you publish new content. Keep in mind that they will need to have the appropriate app installed on their device in order to receive the notifications.