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Woocommerce simple order notification allows you to receive a SMS when a new order is placed on your site. The plugin hooks into woocommerce and on order calls the twilio SMS service to send you a message with the order details.
You will need a twilio SID and auth token, plus a twilio number to use this plugin.
You can access the plugin options from the admin menu

Woocommerce-simple-order-notification

Woocommerce simple order notification allows you to receive a SMS when a new order is placed on your site.

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TG SMS WP Notify will generate SMS for the Manager’s mobile number and/or Customer’s mobile number.
If enabled, the SMS are generated for the Manager’s number on the following actions:-
<ol>
<li>New post publish</li>
<li>New WooCommerce product addition</li>
<li>WooCommerce product Regular price change</li>
<li>WooCommerce product Sale price change</li>
<li>Whenever a WooCommerce product quality reaches a predefined threshold or whenever it goes out of stock.</li>
</ol>
If enabled, the SMS are generated for the Customer’s number on the following actions:-
<ol>
<li>Order status changed to Processing</li>
<li>Order status changed to Completed</li>
</ol>
Currently, TG SMS Notify provides for sending with Twilio.
Please create an account for yourself on <a href="www.twilio.com/referral/KGwFUw" rel="nofollow ugc">Twilio</a>. They can send SMS all over the world and give out a few hundred SMS for free. I believe that would be more than you’d require for a small store.
We plan to release more features including adding more providers such as Twilio. If you have any particular provider that you’d prefer be integrated, drop us an email at hello@karmadaily.com
Settings
Navigate to Settings > TG SMS Notify Settings
Fill the following Twilio details (these are essential for delivery) 
* Twilio Account SId 
* Twilio Auth Token 
* Twilio From number 
* Enter the Recipient Manager Number. 
* The customer modules would want a valid incoming SMS-enabled numbers (Check your Twilio account dashboard for delivery enablement and pricing if you deliver orders worldwide and want the SMS to too).
All other fields are optional. The SMS would be generated for those enabled (checked). These are:-
<ol>
<li>Send SMS for New Post</li>
<li>Send SMS for New Product</li>
<li>Send SMS for Product Price Change</li>
<li>
Send SMS for Quantity Alert
</li>
<li>
Notify Customer on Ouder Processing
</li>
<li>Notify Customer on Ouder Completed</li>
</ol>
Except for the message related to Quantity Alert, all other messages could be customized here.

TG Send SMS Notifications for WordPress and WooCommerce Twilio

Send SMS notifications on new Post publish, New Product addition, price changes and Order status change to Processing and Completed.

Woocommerce-simple-order-notification vs TG Send SMS Notifications for WordPress and WooCommerce Twilio