1. Now, when there is a new sales, you will be first notified by your WooCommerce through emails. Here are the example of the notification from your mobile phone.

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2. You will be also notified from senangPay, since you are subscribing senangPay

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3. If you do not want to received double notification on a single sales, simply make sure that you are using different email for senangPay and your WooCommerce email setting.