WooCommerce SMS Notifications
– No Plugin Required

Setup in 3 Steps

From zero to sending WooCommerce SMS notifications in under 15 minutes.

1. 1

   Install SMS Gateway Master & get your API key

   Download SMS Gateway Master from Google Play. Sign in with your Google account. Go to Settings → API Key and copy your unique key. Keep it secret — it authenticates all API calls.

2. 2

   Add the PHP helper function to your theme's functions.php

   Open wp-content/themes/your-theme/functions.php (or a custom plugin file) and add the function below. Replace YOUR_API_KEY_HERE with your key.

   PHP — Helper Function (functions.php) 📋 Copy

   /**
    * SMS Gateway Master — helper function for WooCommerce
    * Docs: https://sms-gateway-ae7e1.web.app/documentation.html
    */
   function sms_gateway_send( string $phone, string $message ): bool {
       $api_key  = 'YOUR_API_KEY_HERE'; // replace with your key
       $endpoint = 'https://us-central1-sms-gateway-ae7e1.cloudfunctions.net/api_sms_send';
   
       $response = wp_remote_post( $endpoint, [
           'headers' => [
               'Content-Type' => 'application/json',
               'X-API-Key'    => $api_key,
           ],
           'body'    => wp_json_encode([
               'phoneNumber' => $phone,
               'message'     => $message,
           ]),
           'timeout' => 10,
       ]);
   
       return ! is_wp_error( $response )
           && 200 === wp_remote_retrieve_response_code( $response );
   }

3. 3

   Add WooCommerce hooks to send SMS on order events

   Add the hooks below to the same functions.php file. Each hook fires when an order reaches the specified status and sends an SMS to the customer's billing phone number.

   PHP — WooCommerce Order Hooks 📋 Copy

   // ── Order placed / processing ──────────────────────────────
   add_action( 'woocommerce_order_status_processing', function( $order_id ) {
       $order = wc_get_order( $order_id );
       $phone = $order->get_billing_phone();
       $name  = $order->get_billing_first_name();
       $total = $order->get_formatted_order_total();
   
       if ( $phone ) {
           sms_gateway_send(
               $phone,
               "Hi {$name}! Your order #{$order_id} ({$total}) has been received. Thank you for shopping with us!"
           );
       }
   });
   
   // ── Order completed / shipped ───────────────────────────────
   add_action( 'woocommerce_order_status_completed', function( $order_id ) {
       $order = wc_get_order( $order_id );
       $phone = $order->get_billing_phone();
       $name  = $order->get_billing_first_name();
   
       if ( $phone ) {
           sms_gateway_send(
               $phone,
               "Hi {$name}! Your order #{$order_id} has been completed/shipped. We hope you enjoy your purchase!"
           );
       }
   });
   
   // ── Order on hold ───────────────────────────────────────────
   add_action( 'woocommerce_order_status_on-hold', function( $order_id ) {
       $order = wc_get_order( $order_id );
       $phone = $order->get_billing_phone();
       $name  = $order->get_billing_first_name();
   
       if ( $phone ) {
           sms_gateway_send(
               $phone,
               "Hi {$name}! Your order #{$order_id} is currently on hold pending payment confirmation. Please contact us if you have questions."
           );
       }
   });