> For the complete documentation index, see [llms.txt](https://docs.yaycommerce.com/bookster/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yaycommerce.com/bookster/addons/twilio-sms.md).

# Twilio SMS

The **SMS Options** section allows you to connect Bookster with **Twilio** so the system can send SMS notifications and reminders to customers or agents.

Before using SMS Notifications or SMS Reminders, you must configure and verify your Twilio credentials here.

<figure><img src="/files/rQ4gPzvRGXCj5kJrXy26" alt=""><figcaption></figcaption></figure>

**SMS Notification**

Enable this toggle to activate SMS functionality across the system.\
When enabled, Bookster can send SMS notifications and reminders using your Twilio account.

**Account SID**

Enter your **Twilio Account SID**.\
This value can be found in your Twilio Dashboard and is used to identify your Twilio account.

**Auth Token**

Enter your **Twilio Auth Token**.\
This token is required to authenticate requests sent from Bookster to Twilio.

**Sender Phone Number**

Enter the **Twilio phone number** that will be used to send SMS messages.\
The phone number must be purchased and verified in your Twilio account.

Example format:\
`+1234567890`

**Send Test SMS**

Click **Send Test SMS** to verify that your Twilio credentials and phone number are configured correctly.\
If the test SMS is delivered successfully, your SMS integration is ready to use.

**Save Changes**

Click **Save Changes** to apply and store your Twilio SMS settings.