# SMS Notifications

SMS is a fast and convenient channel for sending payment-related notifications to customers. With high open rates and immediate delivery, SMS is ideal for sending concise, time-sensitive payment details such as payment confirmations, status updates, or critical actions performed on a transaction (e.g., refunds, voids). 

## [Prerequisites](#prerequisites)

To ensure SMS notifications work seamlessly, certain prerequisites must be met:

* **Customer Phone Number:** The customer’s phone number must be required and provided when creating a payment transaction. To set the phone number as a mandatory field, please contact [Ottu support team](mailto:support@ottu.com).<br>

  <figure><img src="https://2847651520-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiUKrMb9zLt5ZzGPUYDsK%2Fuploads%2F0Vp7XU0ebqjZgUJQHaLq%2Fimage.png?alt=media&#x26;token=b4eb26e4-25df-41ac-94bc-60f5e49f8d55" alt=""><figcaption></figcaption></figure>
* **SMS Template Configuration:** Ensure that the SMS related templates are fully configured and reviewed for accuracy and completeness before enabling SMS notifications. To configure SMS templates, please contact [Ottu support team](mailto:support@ottu.com).
* **Enabling SMS Templates:** Merchant can enable these templates by selecting the corresponding checkboxes during the payment transaction creation process, either before or after the payment, depending on the specific requirement.<br>

  <figure><img src="https://2847651520-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiUKrMb9zLt5ZzGPUYDsK%2Fuploads%2FgGL0GerbAwReKUj8ycIh%2Fimage.png?alt=media&#x26;token=b381dc7c-adb4-45dc-9236-6c37019beefa" alt=""><figcaption></figcaption></figure>
* **SMS Provider:** A dedicated SMS provider should be added and configured through [Ottu support team](mailto:support@ottu.com).&#x20;

## [SMS Notification Availability](#sms-notification-availability)

Ottu sends SMS notifications to customers based on key states in the payment lifecycle. These states ensure that customers are informed about important transaction states in a timely manner.

### [**Pre/Post Payment States**](#pre-post-payment-states)

The following states trigger SMS notifications for payment events:

* `created`
* `paid`
* `authorized`
* `canceled`
* `failed`
* `expired`

For more information about payment states, refer to the [Parent Payment States](https://docs.ottu.com/payment-tracking/payment-transactions-states#parent-states) section.

### [**Operation States**](#operation-states)

SMS notifications are triggered for key operation States, including:

* `captured`
* `refunded`
* `voided`

For further details on operation  states, see the [Operation Clauses](https://docs.ottu.com/payment-gateway#operations-clauses) section.

{% hint style="info" %}
Pre payment SMS notification is not available for the [E-Commerce ](https://docs.ottu.com/user-guide/plugins/e-commerce)plugin
{% endhint %}